While the City Sleeps

Unhappily married Richard Mason concocts a meticulous scheme to kill his shrewish wife so that he'll be free to marry her sister.

After an innocent man is executed in a case he was responsible for, a Scotland Yard superintendent finds himself investigating the murder of his key witness.

A crooked politician finds himself being accused of murder by a gangster from whom he refused help during a re-election campaign.

Master car thieves square off against French gangsters in the South of France with money, women and lives all on the line.