Concentration / Season 1 ▦ Season guide Concentration: Season 1 273 episodes Premiered Aug 25, 1958 Updated Jul 22, 2026 Spoiler-safe Advertisement Season 1 Episodes Episode Guide 🛡️ SPOILER SHIELD Season 1 Progress Shield All Safe I'm Watching Caught Up Season: Season 1 Last Watched: None (Not started) Episode 1 Episode 2 Episode 3 Episode 4 Episode 5 Episode 6 Episode 7 Episode 8 Episode 9 Episode 10 Episode 11 Episode 12 Episode 13 Episode 14 Episode 15 Episode 16 Episode 17 Episode 18 Episode 19 Episode 20 Episode 21 Episode 22 Episode 23 Episode 24 Episode 25 Episode 26 Episode 27 Episode 28 Episode 29 Episode 30 Episode 31 Episode 32 Episode 33 Episode 34 Episode 35 Episode 36 Episode 37 Episode 38 Episode 39 Episode 40 Episode 41 Episode 42 Episode 43 Episode 44 Episode 45 Episode 46 Episode 47 Episode 48 Episode 49 Episode 50 Episode 51 Episode 52 Episode 53 Episode 54 Episode 55 Episode 56 Episode 57 Episode 58 Episode 59 Episode 60 Episode 61 Episode 62 Episode 63 Episode 64 Episode 65 Episode 66 Episode 67 Episode 68 Episode 69 Episode 70 Episode 71 Episode 72 Episode 73 Episode 74 Episode 75 Episode 76 Episode 77 Episode 78 Episode 79 Episode 80 Episode 81 Episode 82 Episode 83 Episode 84 Episode 85 Episode 86 Episode 87 Episode 88 Episode 89 Episode 90 Episode 91 Episode 92 Episode 93 Episode 94 Episode 95 Episode 96 Episode 97 Episode 98 Episode 99 Episode 100 Episode 101 Episode 102 Episode 103 Episode 104 Episode 105 Episode 106 Episode 107 Episode 108 Episode 109 Episode 110 Episode 111 Episode 112 Episode 113 Episode 114 Episode 115 Episode 116 Episode 117 Episode 118 Episode 119 Episode 120 Episode 121 Episode 122 Episode 123 Episode 124 Episode 125 Episode 126 Episode 127 Episode 128 Episode 129 Episode 130 Episode 131 Episode 132 Episode 133 Episode 134 Episode 135 Episode 136 Episode 137 Episode 138 Episode 139 Episode 140 Episode 141 Episode 142 Episode 143 Episode 144 Episode 145 Episode 146 Episode 147 Episode 148 Episode 149 Episode 150 Episode 151 Episode 152 Episode 153 Episode 154 Episode 155 Episode 156 Episode 157 Episode 158 Episode 159 Episode 160 Episode 161 Episode 162 Episode 163 Episode 164 Episode 165 Episode 166 Episode 167 Episode 168 Episode 169 Episode 170 Episode 171 Episode 172 Episode 173 Episode 174 Episode 175 Episode 176 Episode 177 Episode 178 Episode 179 Episode 180 Episode 181 Episode 182 Episode 183 Episode 184 Episode 185 Episode 186 Episode 187 Episode 188 Episode 189 Episode 190 Episode 191 Episode 192 Episode 193 Episode 194 Episode 195 Episode 196 Episode 197 Episode 198 Episode 199 Episode 200 Episode 201 Episode 202 Episode 203 Episode 204 Episode 205 Episode 206 Episode 207 Episode 208 Episode 209 Episode 210 Episode 211 Episode 212 Episode 213 Episode 214 Episode 215 Episode 216 Episode 217 Episode 218 Episode 219 Episode 220 Episode 221 Episode 222 Episode 223 Episode 224 Episode 225 Episode 226 Episode 227 Episode 228 Episode 229 Episode 230 Episode 231 Episode 232 Episode 233 Episode 234 Episode 235 Episode 236 Episode 237 Episode 238 Episode 239 Episode 240 Episode 241 Episode 242 Episode 243 Episode 244 Episode 245 Episode 246 Episode 247 Episode 248 Episode 249 Episode 250 Episode 251 Episode 252 Episode 253 Episode 254 Episode 255 Episode 256 Episode 257 Episode 258 Episode 259 Episode 260 Episode 261 Episode 262 Episode 263 Episode 264 Episode 265 Episode 266 Episode 267 Episode 268 Episode 269 Episode 270 Episode 271 Episode 272 Episode 273 Future titles & synopses blurred. Tap "Reveal" on any card to peek. Binge Efficiency Engine Season 1: Filler vs. Essential Canon Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests. 99% Mytharc (3): Crucial lore & season climaxes Core (270): Character development & subplots Side Quest (0): Standalone / filler Show All (273) Crucial Mytharc (3) Essential Canon (273) S1·E1 Mytharc Monday August 25, 1958 (Debut Show) Aug 25, 1958 S1·E2 Core Tuesday August 26, 1958 Aug 26, 1958 S1·E3 Core Wednesday August 27, 1958 Aug 27, 1958 S1·E4 Core Thursday August 28, 1958 Aug 28, 1958 S1·E5 Core Friday August 29, 1958 Aug 29, 1958 S1·E6 Core Monday September 1, 1958 Sep 1, 1958 S1·E7 Core Tuesday September 2, 1958 Sep 2, 1958 S1·E8 Core Wednesday September 3, 1958 Sep 3, 1958 S1·E9 Core Thursday September 4, 1958 Sep 4, 1958 S1·E10 Core Friday September 5, 1958 Sep 5, 1958 S1·E11 Core Monday September 8, 1958 Sep 8, 1958 S1·E12 Core Tuesday September 9, 1958 Sep 9, 1958 S1·E13 Core Wednesday September 10, 1958 Sep 10, 1958 S1·E14 Core Thursday September 11, 1958 Sep 11, 1958 S1·E15 Core Friday September 12, 1958 Sep 12, 1958 S1·E16 Core Monday September 15, 1958 Sep 15, 1958 S1·E17 Core Tuesday September 16, 1958 Sep 16, 1958 S1·E18 Core Wednesday September 17, 1958 Sep 17, 1958 S1·E19 Core Thursday September 18, 1958 Sep 18, 1958 S1·E20 Core Friday September 19, 1958 Sep 19, 1958 S1·E21 Core Monday September 22, 1958 Sep 22, 1958 S1·E22 Core Tuesday September 23, 1958 Sep 23, 1958 S1·E23 Core Wednesday September 24, 1958 Sep 24, 1958 S1·E24 Core Thursday September 25, 1958 Sep 25, 1958 S1·E25 Core Friday September 26, 1958 Sep 26, 1958 S1·E26 Core Monday September 29, 1958 Sep 29, 1958 S1·E27 Core Tuesday September 30, 1958 Sep 30, 1958 S1·E28 Core Wednesday October 1, 1958 Oct 1, 1958 S1·E29 Core Thursday October 2, 1958 Oct 2, 1958 S1·E30 Core Friday October 3, 1958 Oct 3, 1958 S1·E31 Core Monday October 6, 1958 Oct 6, 1958 S1·E32 Core Tuesday October 7, 1958 Oct 7, 1958 S1·E33 Core Wednesday October 8, 1958 Oct 8, 1958 S1·E34 Core Thursday October 9, 1958 Oct 9, 1958 S1·E35 Core Friday October 10, 1958 Oct 10, 1958 S1·E36 Core Monday October 13, 1958 Oct 13, 1958 S1·E37 Core Tuesday October 14, 1958 Oct 14, 1958 S1·E38 Core Wednesday October 15, 1958 Oct 15, 1958 S1·E39 Core Thursday October 16, 1958 Oct 16, 1958 S1·E40 Core Friday October 17, 1958 Oct 17, 1958 S1·E41 Core Monday October 20, 1958 Oct 20, 1958 S1·E42 Core Tuesday October 21, 1958 Oct 21, 1958 S1·E43 Core Wednesday October 22, 1958 Oct 22, 1958 S1·E44 Core Thursday October 23, 1958 Oct 23, 1958 S1·E45 Core Friday October 24, 1958 Oct 24, 1958 S1·E46 Core Monday October 27, 1958 Oct 27, 1958 S1·E47 Core Tuesday October 28, 1958 Oct 28, 1958 S1·E48 Core Wednesday October 29, 1958 Oct 29, 1958 S1·E49 Core Thursday October 30, 1958 (Daytime) Oct 30, 1958 S1·E50 Core October 30, 1958 (Nighttime) Oct 30, 1958 S1·E51 Core Friday October 31, 1958 Oct 31, 1958 S1·E52 Core Monday November 3, 1958 Nov 3, 1958 S1·E53 Core Tuesday November 4, 1958 Nov 4, 1958 S1·E54 Core Wednesday November 5, 1958 Nov 5, 1958 S1·E55 Core Thursday November 6, 1958 (Daytime) Nov 6, 1958 S1·E56 Core November 6, 1958 (Nighttime) Nov 6, 1958 S1·E57 Core Friday November 7, 1958 Nov 7, 1958 S1·E58 Core Monday November 10, 1958 Nov 10, 1958 S1·E59 Core Tuesday November 11, 1958 Nov 11, 1958 S1·E60 Core Wednesday November 12, 1958 Nov 12, 1958 S1·E61 Core Thursday November 13, 1958 (Daytime) Nov 13, 1958 S1·E62 Core November 13, 1958 (Nighttime) Nov 13, 1958 S1·E63 Core Friday November 14, 1958 Nov 14, 1958 S1·E64 Core Monday November 17, 1958 Nov 17, 1958 S1·E65 Core Tuesday November 18, 1958 Nov 18, 1958 S1·E66 Core Wednesday November 19, 1958 Nov 19, 1958 S1·E67 Core Thursday November 20, 1958 (Daytime) Nov 20, 1958 S1·E68 Core November 20, 1958 (Nighttime) Nov 20, 1958 S1·E69 Core Friday November 21, 1958 Nov 21, 1958 S1·E70 Core Monday November 24, 1958 Nov 24, 1958 S1·E71 Core Tuesday November 25, 1958 Nov 25, 1958 S1·E72 Core Wednesday November 26, 1958 Nov 26, 1958 S1·E73 Core Thursday November 27, 1958 (Preempted for Macy's Parade) Nov 27, 1958 S1·E74 Core Friday November 28, 1958 Nov 28, 1958 S1·E75 Core Monday December 1, 1958 Dec 1, 1958 S1·E76 Core Tuesday December 2, 1958 Dec 2, 1958 S1·E77 Core Wednesday December 3, 1958 Dec 3, 1958 S1·E78 Core Thursday December 4, 1958 Dec 4, 1958 S1·E79 Core Friday December 5, 1958 Dec 5, 1958 S1·E80 Core Monday December 8, 1958 Dec 8, 1958 S1·E81 Core Tuesday December 9, 1958 Dec 9, 1958 S1·E82 Core Wednesday December 10, 1958 Dec 10, 1958 S1·E83 Core Thursday December 11, 1958 Dec 11, 1958 S1·E84 Core Friday December 12, 1958 Dec 12, 1958 S1·E85 Core Monday December 15, 1958 Dec 15, 1958 S1·E86 Core Tuesday December 16, 1958 Dec 16, 1958 S1·E87 Core Wednesday December 17, 1958 Dec 17, 1958 S1·E88 Core Thursday December 18, 1958 Dec 18, 1958 S1·E89 Core Friday December 19, 1958 Dec 19, 1958 S1·E90 Core Monday December 22, 1958 Dec 22, 1958 S1·E91 Core Tuesday December 23, 1958 Dec 23, 1958 S1·E92 Core Wednesday December 24, 1958 Dec 24, 1958 S1·E93 Core Thursday December 25, 1958 Dec 25, 1958 S1·E94 Core Friday December 26, 1958 Dec 26, 1958 S1·E95 Core Monday December 29, 1958 Dec 29, 1958 S1·E96 Core Tuesday December 30, 1958 Dec 30, 1958 S1·E97 Core Wednesday December 31, 1958 Dec 31, 1958 S1·E98 Core Thursday January 1, 1959 Jan 1, 1959 S1·E99 Core Friday January 2, 1959 Jan 2, 1959 S1·E100 Core Monday January 5, 1959 Jan 5, 1959 S1·E101 Core Tuesday January 6, 1959 Jan 6, 1959 S1·E102 Core Wednesday January 7, 1959 Jan 7, 1959 S1·E103 Core Thursday January 8, 1959 Jan 8, 1959 S1·E104 Core Friday January 9, 1959 Jan 9, 1959 S1·E105 Core Monday January 12, 1959 Jan 12, 1959 S1·E106 Core Tuesday January 13, 1959 Jan 13, 1959 S1·E107 Core Wednesday January 14, 1958 Jan 14, 1958 S1·E108 Core Thursday January 15, 1959 Jan 15, 1959 S1·E109 Core Friday January 16, 1959 Jan 16, 1959 S1·E110 Core Monday January 19, 1959 Jan 19, 1959 S1·E111 Core Tuesday January 20, 1959 Jan 20, 1959 S1·E112 Core Wednesday January 21, 1959 Jan 21, 1959 S1·E113 Core Thursday January 22, 1959 Jan 22, 1959 S1·E114 Core Friday January 23, 1959 Jan 23, 1959 S1·E115 Core Monday January 26, 1959 Jan 26, 1959 S1·E116 Core Tuesday January 27, 1959 Jan 27, 1959 S1·E117 Core Wednesday January 28, 1959 Jan 28, 1959 S1·E118 Core Thursday January 29, 1959 Jan 29, 1959 S1·E119 Core Friday January 30, 1959 Jan 30, 1959 S1·E120 Core Monday February 2, 1959 Feb 2, 1959 S1·E121 Core Tuesday February 3, 1959 Feb 3, 1959 S1·E122 Core Wednesday February 4, 1959 Feb 4, 1959 S1·E123 Core Thursday February 5, 1959 Feb 5, 1959 S1·E124 Core Friday February 6, 1959 Feb 6, 1959 S1·E125 Core Monday February 9, 1959 Feb 9, 1959 S1·E126 Core Tuesday February 10, 1959 Feb 10, 1959 S1·E127 Core Wednesday February 11, 1959 Feb 11, 1959 S1·E128 Core Thursday February 12, 1959 Feb 12, 1959 S1·E129 Core Friday February 13, 1959 Feb 13, 1959 S1·E130 Core Monday February 16, 1959 Feb 16, 1959 S1·E131 Core Tuesday February 17, 1959 Feb 17, 1959 S1·E132 Core Wednesday February 18, 1959 Feb 18, 1959 S1·E133 Core Thursday February 19, 1959 Feb 19, 1959 S1·E134 Core Friday February 20, 1959 Feb 20, 1959 S1·E135 Core Monday February 23, 1959 Feb 23, 1959 S1·E136 Core Tuesday February 24, 1959 Feb 24, 1959 S1·E137 Core Wednesday February 25, 1959 Feb 25, 1959 S1·E138 Core Thursday February 26, 1959 Feb 26, 1959 S1·E139 Core Friday February 27, 1959 Feb 27, 1959 S1·E140 Core Monday March 2, 1959 Mar 2, 1959 S1·E141 Core Tuesday March 3, 1959 Mar 3, 1959 S1·E142 Core Wednesday March 4, 1959 Mar 4, 1959 S1·E143 Core Thursday March 5, 1959 Mar 5, 1959 S1·E144 Core Friday March 6, 1959 Mar 6, 1959 S1·E145 Core Monday March 9, 1959 Mar 9, 1959 S1·E146 Core Tuesday March 10, 1959 Mar 10, 1959 S1·E147 Core Wednesday March 11, 1959 Mar 11, 1959 S1·E148 Core Thursday March 12, 1959 Mar 12, 1959 S1·E149 Core Friday March 13, 1959 Mar 13, 1959 S1·E150 Core Monday March 16, 1959 Mar 16, 1959 S1·E151 Core Tuesday March 17, 1959 Mar 17, 1959 S1·E152 Core Wednesday March 18, 1959 Mar 18, 1959 S1·E153 Core Thursday March 19, 1959 Mar 19, 1959 S1·E154 Core Friday March 20, 1959 Mar 20, 1959 S1·E155 Core Monday March 23, 1959 Mar 23, 1959 S1·E156 Core Tuesday March 24, 1959 Mar 24, 1959 S1·E157 Core Wednesday March 25, 1959 Mar 25, 1959 S1·E158 Core Thursday March 26, 1959 Mar 26, 1959 S1·E159 Core Friday March 27, 1959 Mar 27, 1959 S1·E160 Core Monday March 30, 1959 Mar 30, 1959 S1·E161 Core Tuesday March 31, 1959 Mar 31, 1959 S1·E162 Core Wednesday April 1, 1959 Apr 1, 1959 S1·E163 Core Thursday April 2, 1959 Apr 2, 1959 S1·E164 Core Friday April 3, 1959 Apr 3, 1959 S1·E165 Core Monday April 6, 1959 Apr 6, 1959 S1·E166 Core Tuesday April 7, 1959 Apr 7, 1959 S1·E167 Core Wednesday April 8, 1959 Apr 8, 1959 S1·E168 Core Thursday April 9, 1959 Apr 9, 1959 S1·E169 Core Friday April 10, 1959 Apr 10, 1959 S1·E170 Core Monday April 13, 1959 Apr 13, 1959 S1·E171 Core Tuesday April 14, 1959 Apr 14, 1959 S1·E172 Core Wednesday April 15, 1959 Apr 15, 1959 S1·E173 Core Thursday April 16, 1959 Apr 16, 1959 S1·E174 Core Friday April 17, 1959 Apr 17, 1959 S1·E175 Core Monday April 20, 1959 Apr 20, 1959 S1·E176 Core Tuesday April 21, 1959 Apr 21, 1959 S1·E177 Core Wednesday April 22, 1959 Apr 22, 1959 S1·E178 Core Thursday April 23, 1959 Apr 23, 1959 S1·E179 Core Friday April 24, 1959 Apr 24, 1959 S1·E180 Core Monday April 27, 1959 Apr 27, 1959 S1·E181 Core Tuesday April 28, 1959 Apr 28, 1959 S1·E182 Core Wednesday April 29, 1959 Apr 29, 1959 S1·E183 Core Thursday April 30, 1959 Apr 30, 1959 S1·E184 Core Friday May 1, 1959 May 1, 1959 S1·E185 Core Monday May 4, 1959 May 4, 1959 S1·E186 Core Tuesday May 5, 1959 May 5, 1959 S1·E187 Core Wednesday May 6, 1959 May 6, 1959 S1·E188 Core Thursday May 7, 1959 May 7, 1959 S1·E189 Core Friday May 8, 1959 May 8, 1959 S1·E190 Core Monday May 11, 1959 May 11, 1959 S1·E191 Core Tuesday May 12, 1959 May 12, 1959 S1·E192 Core Wednesday May 13, 1959 May 13, 1959 S1·E193 Core Thursday May 14, 1959 May 14, 1959 S1·E194 Core Friday May 15, 1959 May 15, 1959 S1·E195 Core Monday May 18, 1959 May 18, 1959 S1·E196 Core Tuesday May 19, 1959 May 19, 1959 S1·E197 Core Wednesday May 20, 1959 May 20, 1959 S1·E198 Core Thursday May 21, 1959 May 21, 1959 S1·E199 Core Friday May 22, 1959 May 22, 1959 S1·E200 Core Monday May 25, 1959 May 25, 1959 S1·E201 Core Tuesday May 26, 1959 May 26, 1959 S1·E202 Core Wednesday May 27, 1959 May 27, 1959 S1·E203 Core Thursday May 28, 1959 May 28, 1959 S1·E204 Core Friday May 29, 1959 May 29, 1959 S1·E205 Core Monday June 1, 1959 Jun 1, 1959 S1·E206 Core Tuesday June 2, 1959 Jun 2, 1959 S1·E207 Core Wednesday June 3, 1959 Jun 3, 1959 S1·E208 Core Thursday June 4, 1959 Jun 4, 1959 S1·E209 Core Friday June 5, 1959 Jun 5, 1959 S1·E210 Core Monday June 8, 1959 Jun 8, 1959 S1·E211 Core Tuesday June 9, 1959 Jun 9, 1959 S1·E212 Core Wednesday June 10, 1959 Jun 10, 1959 S1·E213 Core Thursday June 11, 1959 Jun 11, 1959 S1·E214 Core Friday June 12, 1959 Jun 12, 1959 S1·E215 Core Monday June 15, 1959 Jun 15, 1959 S1·E216 Core Tuesday June 16, 1959 Jun 16, 1959 S1·E217 Core Wednesday June 17, 1959 Jun 17, 1959 S1·E218 Core Thursday June 18, 1959 Jun 18, 1959 S1·E219 Core Friday June 19, 1959 Jun 19, 1959 S1·E220 Core Monday June 22, 1959 Jun 22, 1959 S1·E221 Core Tuesday June 23, 1959 Jun 23, 1959 S1·E222 Core Wednesday June 24, 1959 Jun 24, 1959 S1·E223 Core Thursday June 25, 1959 Jun 25, 1959 S1·E224 Core Friday June 26, 1959 Jun 26, 1959 S1·E225 Core Monday June 29, 1959 Jun 29, 1959 S1·E226 Core Tuesday June 30, 1959 Jun 30, 1959 S1·E227 Core Wednesday July 1, 1959 Jul 1, 1959 S1·E228 Core Thursday July 2, 1959 Jul 2, 1959 S1·E229 Core Friday July 3, 1959 Jul 3, 1959 S1·E230 Core Monday July 6, 1959 Jul 6, 1959 S1·E231 Core Tuesday July 7, 1959 Jul 7, 1959 S1·E232 Core Wednesday July 8, 1959 Jul 8, 1959 S1·E233 Core Thursday July 9, 1959 Jul 9, 1959 S1·E234 Core Friday July 10, 1959 Jul 10, 1959 S1·E235 Core Monday July 13, 1959 Jul 13, 1959 S1·E236 Core Tuesday July 14, 1959 Jul 14, 1959 S1·E237 Core Wednesday July 15, 1959 Jul 15, 1959 S1·E238 Core Thursday July 16, 1959 Jul 16, 1959 S1·E239 Core Friday July 17, 1959 Jul 17, 1959 S1·E240 Core Monday July 20, 1959 Jul 20, 1959 S1·E241 Core Tuesday July 21, 1959 Jul 21, 1959 S1·E242 Core Wednesday July 22, 1959 Jul 22, 1959 S1·E243 Core Thursday July 23, 1959 Jul 23, 1959 S1·E244 Core Friday July 24, 1959 Jul 24, 1959 S1·E245 Core Monday July 27, 1959 Jul 27, 1959 S1·E246 Core Tuesday July 28, 1959 Jul 28, 1959 S1·E247 Core Wednesday July 29, 1959 Jul 29, 1959 S1·E248 Core Thursday July 30, 1959 Jul 30, 1959 S1·E249 Core Friday July 31, 1959 Jul 31, 1959 S1·E250 Core Monday August 3, 1959 Aug 3, 1959 S1·E251 Core Tuesday August 4, 1959 Aug 4, 1959 S1·E252 Core Wednesday August 5, 1959 Aug 5, 1959 S1·E253 Core Thursday August 6, 1959 Aug 6, 1959 S1·E254 Core Friday August 7, 1959 Aug 7, 1959 S1·E255 Core Monday August 10, 1959 Aug 10, 1959 S1·E256 Core Tuesday August 11, 1959 Aug 11, 1959 S1·E257 Core Wednesday August 12, 1959 Aug 12, 1959 S1·E258 Core Thursday August 13, 1959 Aug 13, 1959 S1·E259 Core Friday August 14, 1959 Aug 14, 1959 S1·E260 Core Monday August 17, 1959 Aug 17, 1959 S1·E261 Core Tuesday August 18, 1959 Aug 18, 1959 S1·E262 Core Wednesday August 19, 1959 Aug 19, 1959 S1·E263 Core Thursday August 20, 1959 Aug 20, 1959 S1·E264 Core Friday August 21, 1959 Aug 21, 1959 S1·E265 Core Monday August 24, 1959 (1st Anniversary Weekday) Aug 24, 1959 S1·E266 Core Tuesday August 25, 1959 (Happy 1st Anniversary) Aug 25, 1959 S1·E267 Core Wednesday August 26, 1959 Aug 26, 1959 S1·E268 Core Thursday August 27, 1959 Aug 27, 1959 S1·E269 Core Friday August 28, 1959 Aug 28, 1959 S1·E270 Core Monday August 31, 1959 Aug 31, 1959 S1·E271 Core Tuesday September 1, 1959 Sep 1, 1959 S1·E272 Mytharc Wednesday September 2, 1959 Sep 2, 1959 S1·E273 Mytharc Wednesday September 2, 1959 Sep 2, 1959