Basil Rathbone, best known as Hollywood's Sherlock Holmes, steals the show as a debonair European gentleman in the romance "Sin Takes a Holiday" (1930). Constance Bennett's wallflower secretary marries Kenneth MacKenna's neglectful divorce lawyer but finds herself more greatly appreciated by Rathbone. What happens when MacKenna realizes that he loves Bennett after all? Zasu Pitts co-stars in this candid love triangle.