
Detective Michael Shayne, hated by Rafferty, faces agency closure when he takes a case for Eleanor Ramsey, who is being blackmailed. Ramsey schemes to steal the fortune and drags Shayne into an insurance fraud. After she is murdered, Rafferty blames Shayne, suspicion falls on Buell Renslow. Shayne’s secretary Phyllis Hamilton aids the investigation.
Does Murder Is My Business have end credit scenes?
No!
Murder Is My Business does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of Murder Is My Business, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Virginia Christine
Dora Darnell

David Reed
Ernest Ramsey

Lyle Talbot
Buell Renslow

Helene Heigh
Eleanor Ramsey

Donald Kerr
Taxi Driver

Ralph Dunn
Pete Rafferty

Pierre Watkin
Arnold Ramsey

Jack Chefe
Headwaiter

Broderick O'Farrell
Archibald

Hugh Beaumont
Michael Shayne

George Meeker
Carl Meldrum

Richard Keene
Tim Rourke

Carol Andrews
Mona Tabor

Cheryl Walker
Phyllis Hamilton

Parker Garvie
Joe Darnell

Julia McMillan
Dorothy Ramsey
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Challenge your knowledge of Murder Is My Business with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
Who is the private detective hired to investigate the threatening letters?
Read the complete plot summary of Murder Is My Business, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
Arnold Ramsey is a man with two adult children, Dorothy and Ernest, who harbor strong feelings of resentment toward his second wife, Eleanor. Despite [Eleanor]‘s financial stability and her own wealth, she refuses to allocate her money toward supporting the luxurious lifestyles that her stepchildren desire. This tension creates a tense family environment, where relationships are fraught with hostility and underlying conflict.
The story takes a turn when [Eleanor] seeks assistance from private detective Mike Shayne. She hires him to investigate a series of threatening letters she has been receiving, hinting at dangers lurking around her. As the narrative unfolds through flashbacks, viewers get a detailed view of her domestic situation, revealing the complexities and underlying issues that surround her.
During a meeting with Shayne, [Arnold Ramsey] approaches him with a troubling proposal. Insultingly implying that Shayne operates in shady circles, Ramsey asks if he can arrange a staged jewelry burglary to claim insurance on an empty jewelry case in his wife’s bedroom. Ramsey’s plan involves orchestrating a false break-in where an actor would pretend to rob the jewelry to collect a payout of $1000. Shayne, cautious and wary, indicates he needs time to think over this dubious scheme.
Later, at his office, Shayne confides in his secretary, Phyllis, expressing his frustration over the situation. Unbeknownst to him, his old friend and former criminal, Joe Darnell, along with his wife, Dora, are present nearby, overhearing the conversation. Darnell’s wife is pregnant, and Darnell himself is desperate for $1000. Anxiously, he volunteers to play the part of the burglar, believing it could help him solve his financial problems. Shayne advises him against such dishonesty, offering him a $50 check as a good-faith gesture.
However, Darnell takes matters into his own hands and later goes to the Ramsey residence, claiming Shayne hired him, and gains entry. This leads to a grim turn of events when [Arnold Ramsey] murders his wife [Eleanor] while she sleeps, perhaps out of fear or rage. When Darnell unexpectedly breaks into the bedroom and finds her dead, he tries desperately to revive her, which provides Ramsey with the perfect cover to shoot and kill Darnell, claiming he caught him in the act of murder. The police, convinced by Ramsey’s story, close the case, believing it to be a straightforward act of self-defense.
The plot thickens when Carl Meldrum, an ex-con who is secretly dating Dorothy, witnesses the actual murder. As a con man, Meldrum begins blackmailing Ramsey, knowing the truth. Ramsey, desperate to silence him, attempts to frame Buell Renslow, Eleanor’s brother, who was also present during the night and at odds with her over money. Throughout the investigation, [Mike Shayne] keeps his suspicions about Ramsey alive. As the story reaches its climax, Shayne gathers sufficient evidence to definitively prove who is innocent and who is guilty, ultimately unmasking the true culprit and bringing justice to light.
“I’ll find out the truth, no matter what it takes,” lines from Shayne underscore his relentless pursuit of justice in a case riddled with deceit, treachery, and murder.
This film showcases a complex interplay of motives, deception, and family discord, masterfully weaving a story of crime and resolution that keeps viewers engaged until the very last moment.

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