The Norths find as many suspects in a model's murder as there were men in her life. Richard Denning, Barbara Britton.

The Norths are driving to a party when they're stopped on the street by an injured man. He turns out to be a wounded criminal, and he gets in their car and tells them to drive him to Canada.

Posing as Pam's cousin, a murderess lures her to the top of a skyscraper. Barbara Britton, Richard Denning. Weigand: Francis De Sales.

A potential suicide victim leaps in front of the Norths' car. Richard Denning, Barbara Britton. Weigand: Francis De Sales.

Gordon Lane, a suicidal invalid, is bitter about his life and jealous of his wife's lover. Marion Lane feels trapped in an unhappy marriage and wants her lover, Barry, to kill her bed-ridden husband. When Barry turns up dead in the Lane's home, Marion is the only logical suspect But when the Norths visit, Pam discovers the truth behind Gordon's disabilities and finds her own life in jeopardy.

The Norths' adversary is a crazed killer who murders only sailors. Richard Denning, Barbara Britton. Weigand: Francis De Sales.