Several days after one of his company's dams burst, ruining the life savings of several investors, a shady power company president is found stabbed to death. Ellery Queen gets to the bottom of the mystery.

Ralph Bellamy
as Ellery Queen

Margaret Lindsay
as Nikki Porter

Charley Grapewin
as Insp. Queen

Spring Byington
as Carlotta Emerson

H.B. Warner
as Ray Jardin

James Burke
as Sgt. Velie

Douglass Dumbrille
as John Matthews

John Beal
as Walter Matthews

Linda Hayes
as Marian Jardin

Sidney Blackmer
as Anthony Rhodes
CinemaSerf
"Walter" (John Beal) returns home to his father's home ready to console him for losing all his money after the collapse of the Southern Valley Electrical Company. Surprisingly, though, he finds "John" (Douglass Dumbrille) in good spirits having seen the writing on the wall and sold his stock earlier...