A stranger breaks into a man’s apartment, and guns him down. Later, in Mr

Keen’s office, he and Mike are interupted by a woman who tells them all she knows about the shooting of her friend. Her husband is the main suspect.

Going into flashback mode, she tells how her husband came to tell her about the murder. Wow, this lady has a lot of men in her life. Kenneth, the murdered friend. John, her husband. And who is this Arnold character?

Mr Keen promises to do all he can to get to the bottom of the ordeal. When she leaves, both Mike and mr Keen talk about the glaring flaw they detected in her story. With her permission, the two detectives go to her apartment to hunt for clues. A mystery caller phones the apartment to say she knows who the killer is. Mr Keen continues putting the clues together, but realizes that it’s more complicated than he first believed.

There’s more people to check on, and evidence of blackmail. Circumstances has the key players all gathered together in the presence of Mr Keen. Pressure is put on as truth is revealed. The killer cracks, but thanks to Mike, the gun is taken from him before real damage can be done. It’s all to prove that you just can’t get away with murder.