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Season guide

M Squad: Season 1

38 episodes Premiered Sep 20, 1957 Updated Jul 23, 2026
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Season 1 Episodes

Episode Guide

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Season 1 Progress Shield

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Binge Efficiency Engine

Season 1: Filler vs. Essential Canon

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

16%
84%
Mytharc (6): Crucial lore & season climaxes
Core (32): Character development & subplots
Side Quest (0): Standalone / filler
S1·E1 Mytharc

The Golden Look

Sep 20, 1957 · 30 min

The Squad is on the lookout for a bank robbery suspect with a unique feature, witnesses say he has gold teeth.

S1·E2 Core

The Watchdog

Sep 27, 1957 · 30 min

Ballinger and the Squad are out to catch a burglar who may have rabies.

S1·E4 Core

Pete Loves Mary

Oct 11, 1957 · 30 min

The squad goes after a jail inmate who's just escaped.

S1·E5 Core

Face of Evil

Oct 18, 1957 · 30 min

Ballinger investigates the murders of four women. The victims were all connected to the same church and lived within two miles of each other.

S1·E6 Core

Street of Fear

Nov 1, 1957 · 30 min

Chicago cop Frank Ballinger stages a rescue in order to gain the confidence of Alice, a young woman who works for suspected jewelry fence Louis Prince. Pretending to be furniture s

S1·E7 Core

The Matinee Trade

Nov 8, 1957 · 30 min

Lt. Frank Ballinger investigates the case of a gambling ring and its connection to an unidentified police officer. The deeper into the investigation he gets, the more Ballinger bec

S1·E8 Core

The Hard Case

Nov 15, 1957 · 30 min

A jewelry store robbery sends the thief to prison, but his claim that the night watchman, a former big-league ballplayer named Lightnin' Joe Adams, was in on the heist costs Adams

S1·E9 Core

Killer in Town

Nov 22, 1957 · 30 min

Frank Ballinger and his colleagues on the M Squad have to find a needle in a haystack: a cop killer somewhere in the city of Chicago. Their only clues are an old magazine and the k

S1·E10 Core

Diamond Hard

Nov 29, 1957 · 30 min

Lt. Frank Ballinger keeps an eye on Hazel, a bar girl with a record who nonetheless wants to go straight. He discovers she is involved with Joe Mazzerin, a safecracker. Ballinger g

S1·E11 Core

The Alibi Witness

Dec 6, 1957 · 30 min

When perennial loser Wally Gardner is identified as the perpetrator of a robbery-murder, he tells police unique details of a stranger he met miles away at the time of the crime. Bu

S1·E12 Core

The Specialists

Dec 13, 1957 · 30 min

When a hired gunman gets himself tossed in jail following a fistfight, Lt. Frank Ballinger takes his place undercover as protection for a group of three businessmen who meet once a

S1·E13 Core

Family Portrait

Dec 20, 1957 · 30 min

When his partner in an investigation is killed, Lt. Frank Ballinger makes it a personal business to pin the crime on narcotics lord Sam Hinder. But, as Ballinger discovers, Hinder

S1·E14 Core

The Palace Guard

Dec 27, 1957 · 30 min

Gangster Tommy Hatch is wanted for murder, but the police have to keep him safe from other gangsters who want him dead before he can testify against them. Lt. Frank Ballinger is as

S1·E15 Core

The Slow Trap

Jan 3, 1958 · 30 min

Ballinger investigates the case of a security courier who is charged with robbing himself of $75,000.

S1·E16 Core

The Cover Up

Jan 10, 1958 · 30 min

District Attorney Grover calls for Ballinger to help him sort out a potentially embarrassing situation involving the murder of a former business associate.

S1·E17 Core

Blue Indigo

Jan 17, 1958 · 30 min

The room mate of the third murder victim of the Blue Indigo serial killer may be the only link Ballinger has to catching him.

S1·E18 Core

The Long Ride

Jan 24, 1958 · 30 min

When a convicted murderer gets the upper hand on Lieutenant Ballinger during a train ride back to Chicago, his last best hope for recapturing the felon is the persistence of an ale

S1·E19 Core

The Shakedown

Jan 31, 1958 · 30 min

Ballinger suspects an inside job when a dry cleaning company refuses to knuckle under to a shakedown mob.

S1·E20 Core

Dolly's Bear

Feb 7, 1958 · 30 min

Kathy Bane, an old flame of Ballinger's, needs his help when a blackmailer trying to extort money turns up dead-- in her apartment.

S1·E21 Core

Lover's Lane Killing

Feb 14, 1958 · 30 min

Ballinger investigates a murder with multiple motives.

S1·E22 Core

The Frightened Wife

Feb 21, 1958 · 30 min

A man's aunt reports her nephew is missing. Ballinger investigates.

S1·E23 Core

The Black Mermaid

Feb 28, 1958 · 30 min

Ballinger goes undercover to capture a robbery suspect.

S1·E24 Core

The Man in Hiding

Mar 7, 1958 · 30 min

Ballinger investigates after a bank robber leaves a pencil at the scene.

S1·E25 Mytharc

Chicago Bluebeard

Mar 14, 1958 · 30 min

A woman dies. Ballinger investigates.

S1·E26 Core

Girl Lost

Mar 21, 1958 · 30 min

A woman loses her memory. Bellinger investigates.

S1·E27 Core

Hideout

Mar 28, 1958 · 30 min

Bank robbers hide in a suburban house.

S1·E28 Core

Shot in the Dark

Apr 4, 1958 · 30 min

A sniper is terrorizing Chicago. Ballinger joins the hunt.

S1·E29 Mytharc

The Twenty-Six Girl

Apr 11, 1958 · 30 min

A young wife is shot by an unknown assailant when she drives with her ex-con husband to an isolated woods in search of their dream home. No one even reports the couple missing unti

S1·E30 Mytharc

Fight

Apr 18, 1958 · 30 min

A boxer's (Lancaster) life is being threatened soon after another fighter dies after fighting with Lancaster. Suspicion falls on the other fighter's trainer who feels Lancaster is

S1·E31 Core

Guilty Alibi

Apr 25, 1958 · 30 min

A man confesses to a crime he may not have committed. Meanwhile the president of the company where the man works has been shot to death.

S1·E32 Core

The Healer

May 2, 1958 · 30 min

Lieutenant Ballinger searches for a mentally ill young woman who shot a psychiatrist, hoping all the while that he can also find sufficient evidence to obtain a felony conviction a

S1·E33 Core

Day of Terror

May 9, 1958 · 30 min

Frank Ballinger investigates a illegal adoption racket.

S1·E34 Core

The $20 Plates

May 16, 1958 · 30 min

Ballinger investigates a rash of counterfeit $20 bills.

S1·E35 Core

The Double Face

May 23, 1958 · 30 min

A professional man is identified as a jewelry-store robber, threatening his freedom, not to mention his wife's reputation "from being married unknowingly to such a character". Ball

S1·E36 Core

The System

May 30, 1958 · 30 min

An illegal roving casino eludes the police and cheats players with crooked games. When Ballinger investigates, he encounters additional, unforeseen threats.

S1·E38 Mytharc

Accusation

Jun 13, 1958 · 30 min

A millionaire is found dead in a locked room. His young pretty wife (Fay Spain), and the big hansom driver (Ken Clark), are suspected of the crime. Lee Marvin figures out how the c

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