An unfortunate sailor gets implicated in a murder he never committed. After a bookie is murdered, the sailor is caught in an ever-tightening vice that would trap him as the killer unless he can clear himself. Along the way to struggling free and tracking down the real culprits, several unsavory characters cross his path as well as a rather interesting woman who sets romantic sparks flying.

In this contemporary update of Frank H. Spearman's Western hero, Whispering Smith is now a sleuth who arrives in London on holiday, but is soon called in to solve the case of a suicide which the father of the deceased woman thinks was murder.

An American car salesman in London becomes mixed up in a series of fatal occurrences at a secluded mansion.