 Grace Wheeler Willis, of the dance team Diamond and Wheeler, is enjoying time in the spotlight again, thanks to a new compilation film that includes clips from her old Hollywood movies. This inspires her to revive her successful stage musical, with her old partner Ned Diamond directing. But her rich husband refuses to finance the production, inspiring her to murder him in his bed and make it look like a suicide. Who could think she shot him? The butler knows she was in the screening room the entire time, watching her classic film, "Walking My Baby Back Home." But when the rumpled, redoubtable Lt. Columbo arrives on the scene, he quickly learns one of his favorite film stars is a murderess.