The best Curt Bois’s mystery movies

A young painter stumbles upon an assortment of odd characters at an English estate where he has been hired to give art lessons to beautiful Laura Fairlie. Among them are Anne Catherick, a strange young woman dressed in white whom he meets in the forest and who bears a striking resemblance to Laura; cunning Count Fosco, who hopes to obtain an inheritance for nobleman Sir Percival Glyde, whom he plans to have Laura marry; Mr. Fairlie, a hypochondriac who can't stand to have anyone make the slightest noise; and eccentric Countess Fosco who has her own dark secret. The artist also finds himself drawn to Marion Halcomb, a distant relation to Laura for whom the Count also has plans.

In order to win back his girlfriend, Mike Shayne promises to give up his detective practice and get a job as riveter in an aircraft plant. He quickly finds himself investigating the theft of industrial diamonds from the plant's safe and, utilizing a variety of false identities, traces them first to a dress factory and later to a Hawaii-bound ocean liner. Escaping several attempts on his life, he is able to uncover a Nazi smuggling ring, but the location of the missing diamonds continues to elude him.

A code expert working for Naval Intelligence is assigned to decode enemy messages despite his desire for active duty.