Season
- Season 3 1959-09-18
- Season 2 1958-09-19
- Season 1 1957-09-20
Episode
- Episode 1: More Deadly
- Episode 2: Dead or Alive
- Episode 3: The Missing Claimant
- Episode 4: The Refugee
- Episode 5: The Trap
- Episode 6: Force of Habit
- Episode 7: The Phantom Raiders
- Episode 8: The Merits of the Case
- Episode 9: The Big Kill
- Episode 10: The Sitters
- Episode 11: The Executioner
- Episode 12: The Widows
- Episode 13: Contraband
- Episode 14: Prescription for Murder
- Episode 15: The Teacher (aka Trade School)
- Episode 16: The Third Shadow
- Episode 17: One Man's Life
- Episode 18: The Jumper
- Episode 19: The Last Act
- Episode 20: Mugger Murder
- Episode 21: The Star Witness
- Episode 22: The Take Over
- Episode 23: Voluntary Surrender
- Episode 24: Death Threat
- Episode 25: The Harpies
- Episode 26: Ghost Town
- Episode 27: The Vanishing Lady
- Episode 28: The Crush Out
- Episode 29: The Fire Makers
- Episode 30: The Terror on Dark Street
- Episode 31: Robber's Roost
- Episode 32: The Baited Hook
- Episode 33: Model in the Lake
- Episode 34: The Outsider
- Episode 35: High School Bride
- Episode 36: The Dangerous Game
- Episode 37: Decoy in White
- Episode 38: Mr. Grim's Rabbits
- Episode 39: Platter Pirates
- Episode 40: Death Is a Clock
M Squad Season 2 Model in the Lake
Lt. Frank Ballinger is a no-nonsense plain clothes cop in the elite M Squad Division. The Squad's task is to root out organised crime and corruption in America's Second City, Chicago.
