The Sloanes tie murder to the theft of a Shakespeare manuscript.

Judge Hardy goes to his friend's Arizona ranch to help her in a legal dispute, and he takes his family with him.

Terry is the chief car tester for Emery Motors and Frank is an Engineer. Jane has just been hired to work in publicity. Frank and Terry both want Jane to be their girl. Terry has designed a new carburetor that should bring him fame and money, but he cannot get it to work correctly. Terry and Gadget have tested it for over a year, but it still is not perfected. Emery Motors assigns Frank to help Terry with the carburetor, but Terry is not happy because Frank is an Engineer and is also vying for Jane. They finish the carburetor, and to test it, they enter a car in the Indianapolis 500 race. Terry is not yet satisfied with the carburetor before the big race even though it has passed all the tests.

A condemned murderer named Clement is "liberated" when the Nazis bomb the French jail that holds him. During his escape, Clement comes across the body of a French soldier; he steals the dead man's uniform and identification papers, then hides from the law by joining the Resistance movement. Clement's new identity and purpose in life reforms him, and in due time he has sacrificed himself in service of his country.

A merciless district attorney prosecutes a case that mirrors his own life.

A doctor is driven into an investigation of sinister goings-on at a horse race track by his mystery writer ex-wife.