|Alec Guinness||Sidney Stratton|
|Joan Greenwood||Daphne Birnley|
|Cecil Parker||Alan Birnley|
|Michael Gough||Michael Corland|
|Ernest Thesiger||Sir John Kierlaw|
|George Benson||The Lodger|
|Edie Martin||Mrs. Watson|
Chemist Sidney Stratton is at a crossroads in his career. He's been trying to invent a long-lasting clothing fiber, but his unreasonable demands for high-end equipment have gotten him fired from job after job. Finally, Sidney creates a white suit that is impervious to the elements -- it cannot stain or wrinkle. At first he is celebrated as a hero but, soon enough, the clothing manufacturers realize that the perfect suit is actually very bad for business.