Bert Gavin is a diligent worker who commutes daily from the fictional town of Laurel Creek to his job in downtown San Francisco. He becomes increasingly suspicious and resentful of his wife's infidelity during his long work hours. Determined to end his turmoil, Bert devises a plan to murder his wife, timing the act to coincide with the passing of a train behind their house, using the noise to mask the crime.

Michael Gordon (portrayed by Elliott Lewis), a man who visits his former lover, Frances (played by Lurene Tuttle), three weeks after her hospital discharge. Initially, Michael presents himself as a concerned friend, expressing a desire to rekindle their relationship on platonic terms. However, as their conversation unfolds, Michael's demeaner shifts, revealing a deep-seated jealousy and possessiveness.

Joe Mooney makes his living by taking candid photos of pedestrians in a bustling city. One day, after developing his film, he notices something alarming: a murder occurring in the background of one of his shots. Realizing the gravity of what he has captured, Joe becomes entangled in a dangerous situation as he attempts to do the right thing. His decision to report the incident leads to a series of events that put his life at risk.

Sheldon Leonard portrays Casey, a hired thug tasked with kidnapping and eliminating a man named Sam, played by Elliott Reid. Following his boss's orders, Casey abducts Sam and transports him to a secluded beach. There, Casey binds Sam to a pier piling, intending for the incoming tide to drown him.

In An Evening's Diversion, a worn-out businessman finds himself unexpectedly entangled in murder.

In The Anniversary, the sixth episode of Inspector Steine, it's the five-year anniversary of the Middle Street Massacre. While Steine ponders how to celebrate, Mrs Groynes' deranged nephew, Brian the Brain, escapes from Broadmoor, seeking revenge.

In The Woman, the fifth episode of Inspector Steine, Steine falls in love for the first time when he meets Adelaide Vine, the charming owner of a fish and chip shop in Oriental Place. However, Brunswick suspects that Adelaide may not be as innocent as she seems.

In That's the Way To Do It, the fourth episode of Inspector Steine, Vince the Ventriloquist moves his booth to a new pitch on the Brighton seafront, only to receive threats from an unknown source. Meanwhile, Inspector Steine is far more preoccupied with judging a knickerbocker glory competition than solving the mystery.

In Eyes Down, the third episode of Inspector Steine, Steine decides to go undercover at the Black Cat Casino, much to Brunswick's profound dismay. Meanwhile, a robbery takes place in the bank next door to the police station, adding to the chaos.

In His Last Review, the second episode of Inspector Steine, a famous London theatre critic is found dead in his seat at the Theatre Royal after watching the kitchen-sink drama A Shilling in the Meter. As always, Inspector Steine remains oblivious to the crime, while Twitten and Brunswick suspect foul play.