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Season guide

Big Brother: Big Brother 4

123 episodes Premiered Aug 31, 2003 Updated Sep 25, 2026

Previously on Big Brother

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

⚡ Directly follows the overarching narrative developments of Big Brother Season 3.
⚡ Faction dynamics and core character alliances shift under escalating external stakes.
⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
⚡ Sets up serialized story arcs that build directly toward the climactic season finale.

Season 4 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 4 Progress Shield

Last Watched:

Future titles & synopses blurred. Tap "Reveal" on any card to peek.

Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

98%

Mytharc (3): Crucial lore & season climaxes

Core (120): Character development & subplots

Side Quest (0): Standalone / filler

S4·E1 Mytharc

Gala 1

Aug 31, 2003 · 180 min

S4·E2 Core

Highlights 1

Sep 1, 2003 · 45 min

S4·E3 Core

Highlights 2

Sep 2, 2003 · 45 min

S4·E4 Core

Highlights 3

Sep 3, 2003 · 45 min

S4·E5 Core

Highlights 4

Sep 4, 2003 · 45 min

S4·E6 Core

Highlights 5

Sep 5, 2003 · 45 min

S4·E7 Core

Highlights 6

Sep 6, 2003 · 45 min

S4·E8 Core

Gala 2

Sep 7, 2003 · 180 min

S4·E9 Core

Highlights 7

Sep 8, 2003 · 45 min

S4·E10 Core

Highlights 8

Sep 9, 2003 · 45 min

S4·E11 Core

Highlights 9

Sep 10, 2003 · 45 min

S4·E12 Core

Highlights 10

Sep 11, 2003 · 45 min

S4·E13 Core

Highlights 11

Sep 12, 2003 · 45 min

S4·E14 Core

Highlights 12

Sep 13, 2003 · 45 min

S4·E15 Core

Gala 3

Sep 14, 2003 · 180 min

S4·E16 Core

Highlights 13

Sep 15, 2003 · 45 min

S4·E17 Core

Highlights 14

Sep 16, 2003 · 45 min

S4·E18 Core

Highlights 15

Sep 17, 2003 · 45 min

S4·E19 Core

Highlights 16

Sep 18, 2003 · 45 min

S4·E20 Core

Highlights 17

Sep 19, 2003 · 45 min

S4·E21 Core

Highlights 18

Sep 20, 2003 · 45 min

S4·E22 Core

Gala 4

Sep 21, 2003 · 180 min

S4·E23 Core

Highlights 19

Sep 22, 2003 · 45 min

S4·E24 Core

Highlights 20

Sep 23, 2003 · 45 min

S4·E25 Core

Highlights 21

Sep 24, 2003 · 45 min

S4·E26 Core

Highlights 22

Sep 25, 2003 · 45 min

S4·E27 Core

Highlights 23

Sep 26, 2003 · 45 min

S4·E28 Core

Highlights 24

Sep 27, 2003 · 45 min

S4·E29 Core

Gala 5

Sep 28, 2003 · 180 min

S4·E30 Core

Highlights 25

Sep 29, 2003 · 45 min

S4·E31 Core

Highlights 26

Sep 30, 2003 · 45 min

S4·E32 Core

Highlights 27

Oct 1, 2003 · 45 min

S4·E33 Core

Highlights 28

Oct 2, 2003 · 45 min

S4·E34 Core

Highlights 29

Oct 3, 2003 · 45 min

S4·E35 Core

Highlights 30

Oct 4, 2003 · 45 min

S4·E36 Core

Gala 6

Oct 5, 2003 · 180 min

S4·E37 Core

Highlights 31

Oct 6, 2003 · 45 min

S4·E38 Core

Highlights 32

Oct 7, 2003 · 45 min

S4·E39 Core

Highlights 33

Oct 8, 2003 · 45 min

S4·E40 Core

Highlights 34

Oct 9, 2003 · 45 min

S4·E41 Core

Highlights 35

Oct 10, 2003 · 45 min

S4·E42 Core

Highlights 36

Oct 11, 2003 · 45 min

S4·E43 Core

Gala 7

Oct 12, 2003 · 180 min

S4·E44 Core

Highlights 37

Oct 13, 2003 · 45 min

S4·E45 Core

Highlights 38

Oct 14, 2003 · 45 min

S4·E46 Core

Highlights 39

Oct 15, 2003 · 45 min

S4·E47 Core

Highlights 40

Oct 16, 2003 · 45 min

S4·E48 Core

Highlights 41

Oct 17, 2003 · 45 min

S4·E49 Core

Highlights 42

Oct 18, 2003 · 45 min

S4·E50 Core

Gala 8

Oct 19, 2003 · 180 min

S4·E51 Core

Highlights 43

Oct 20, 2003 · 45 min

S4·E52 Core

Highlights 44

Oct 21, 2003 · 45 min

S4·E53 Core

Highlights 45

Oct 22, 2003 · 45 min

S4·E54 Core

Highlights 46

Oct 23, 2003 · 45 min

S4·E55 Core

Highlights 47

Oct 24, 2003 · 45 min

S4·E56 Core

Highlights 48

Oct 25, 2003 · 45 min

S4·E57 Core

Gala 9

Oct 26, 2003 · 180 min

S4·E58 Core

Highlights 49

Oct 27, 2003 · 45 min

S4·E59 Core

Highlights 50

Oct 28, 2003 · 45 min

S4·E60 Core

Highlights 51

Oct 29, 2003 · 45 min

S4·E61 Core

Highlights 52

Oct 30, 2003 · 45 min

S4·E62 Core

Highlights 53

Oct 31, 2003 · 45 min

S4·E63 Core

Highlights 54

Nov 1, 2003 · 45 min

S4·E64 Core

Gala 10

Nov 2, 2003 · 120 min

S4·E65 Core

Highlights 55

Nov 3, 2003 · 45 min

S4·E66 Core

Highlights 56

Nov 4, 2003 · 45 min

S4·E67 Core

Highlights 57

Nov 5, 2003 · 45 min

S4·E68 Core

Highlights 58

Nov 6, 2003 · 45 min

S4·E69 Core

Highlights 59

Nov 7, 2003 · 45 min

S4·E70 Core

Highlights 60

Nov 8, 2003 · 45 min

S4·E71 Core

Gala 11

Nov 9, 2003 · 180 min

S4·E72 Core

Highlights 61

Nov 10, 2003 · 45 min

S4·E73 Core

Highlights 62

Nov 11, 2003 · 45 min

S4·E74 Core

Highlights 63

Nov 12, 2003 · 45 min

S4·E75 Core

Highlights 64

Nov 13, 2003 · 45 min

S4·E76 Core

Highlights 65

Nov 14, 2003 · 45 min

S4·E77 Core

Highlights 66

Nov 15, 2003 · 45 min

S4·E78 Core

Gala 12

Nov 16, 2003 · 180 min

S4·E79 Core

Highlights 67

Nov 17, 2003 · 45 min

S4·E80 Core

Highlights 68

Nov 18, 2003 · 45 min

S4·E81 Core

Highlights 69

Nov 19, 2003 · 45 min

S4·E82 Core

Highlights 70

Nov 20, 2003 · 45 min

S4·E83 Core

Highlights 71

Nov 21, 2003 · 45 min

S4·E84 Core

Highlights 72

Nov 22, 2003 · 45 min

S4·E85 Core

Gala 13

Nov 23, 2003 · 180 min

S4·E86 Core

Highlights 73

Nov 24, 2003 · 45 min

S4·E87 Core

Highlights 74

Nov 25, 2003 · 45 min

S4·E88 Core

Highlights 75

Nov 26, 2003 · 45 min

S4·E89 Core

Highlights 76

Nov 27, 2003 · 45 min

S4·E90 Core

Highlights 77

Nov 28, 2003 · 45 min

S4·E91 Core

Highlights 78

Nov 29, 2003 · 45 min

S4·E92 Core

Gala 14

Nov 30, 2003 · 180 min

S4·E93 Core

Highlights 79

Dec 1, 2003 · 45 min

S4·E94 Core

Highlights 80

Dec 2, 2003 · 45 min

S4·E95 Core

Highlights 81

Dec 3, 2003 · 45 min

S4·E96 Core

Highlights 82

Dec 4, 2003 · 45 min

S4·E97 Core

Highlights 83

Dec 5, 2003 · 45 min

S4·E98 Core

Highlights 84

Dec 6, 2003 · 45 min

S4·E99 Core

Gala 15

Dec 7, 2003 · 180 min

S4·E100 Core

Highlights 85

Dec 8, 2003 · 45 min

S4·E101 Core

Highlights 86

Dec 9, 2003 · 45 min

S4·E102 Core

Highlights 87

Dec 10, 2003 · 45 min

S4·E103 Core

Highlights 88

Dec 11, 2003 · 45 min

S4·E104 Core

Highlights 89

Dec 12, 2003 · 45 min

S4·E105 Core

Highlights 90

Dec 13, 2003 · 45 min

S4·E106 Core

Gala 16

Dec 14, 2003 · 180 min

S4·E107 Core

Highlights 91

Dec 15, 2003 · 45 min

S4·E108 Core

Highlights 92

Dec 16, 2003 · 45 min

S4·E109 Core

Highlights 93

Dec 17, 2003 · 45 min

S4·E110 Core

Highlights 94

Dec 18, 2003 · 45 min

S4·E111 Core

Highlights 95

Dec 19, 2003 · 45 min

S4·E112 Core

Highlights 96

Dec 20, 2003 · 45 min

S4·E113 Core

Gala 17

Dec 21, 2003 · 180 min

S4·E114 Core

Highlights 97

Dec 22, 2003 · 45 min

S4·E115 Core

Highlights 98

Dec 23, 2003 · 45 min

S4·E116 Core

Highlights 99

Dec 24, 2003 · 45 min

S4·E117 Core

Highlights 100

Dec 25, 2003 · 45 min

S4·E118 Core

Highlights 101

Dec 26, 2003 · 45 min

S4·E119 Core

Highlights 102

Dec 27, 2003 · 45 min

S4·E120 Core

Gala 18

Dec 28, 2003 · 180 min

S4·E121 Core

Highlights 103

Dec 29, 2003 · 45 min

S4·E122 Mytharc

Highlights 104

Dec 30, 2003 · 45 min

S4·E123 Mytharc

Gala 19 (Final)

Dec 31, 2003 · 180 min