Charles Reisner	...	(Director)
Nat Perrin, Sid Kuller	...	(Writer)
Groucho Marx	...	Wolf J. Flywheel
Chico Marx	...	Ravelli
Harpo Marx	...	Wacky
Tony Martin	...	Tommy Rogers
Virginia Grey	...	Joan Sutton
Margaret Dumont	...	Martha Phelps
Douglass Dumbrille	...	Mr. Grover
William Tannen	...	Fred 'Chris' Sutton
Marion Martin	...	Peggy Arden
Virginia O'Brien	...	Kitty
Henry Armetta	...	Guiseppi
Anna Demetrio	...	Maria
Paul Stanton	...	Arthur Hastings
Russell Hicks	...	George Hastings
Bradley Page	...	Duke

Comments: Howl . . . And Farewell ! Their Last Picture . . . And Their Best !

Summary: The Phelps Department Store is about to be sold by its new part owner, Tommy Rogers with the permission of Martha Phelps, the dowager co-owner. The current manager doesn't want this as the irregularities in the books will show up. When an attempt is made on Tommy's life, Martha enlists the worst private eye in the world to protect him, Wolf J. Flywheel.