The Penguin Pool Murder

Murder on the Blackboard

Murder on a Honeymoon

Murder on a Bridle Path

The Plot Thickens

Forty Naughty Girls

Edna May Oliver

Hildegarde Withers

James Gleason

Inspector Oscar Piper

Lola Lane

Phyllis La Font

George Meeker

Tom Kelsey, alias Roswell T. Forrest

Dorothy Libaire

Kay Deving

Harry Ellerbe

Marvin Deving

Chick Chandler

Dick French

Willie Best

Willie (as Sleep 'n' Eat)

Leo G. Carroll

Joseph B. Tate

DeWitt Jennings

Captain Beegle

Spencer Charters

Chief of Police Britt

Arthur Hoyt

Dr. O'Rourke

Matt McHugh

Madden

Morgan Wallace

McArthur aka Arthur Mack

Brooks Benedict

Roswell T. Forrest

Harry Allen

Hotel Gardener (uncredited)

Irving Bacon

Man with Pelican (uncredited)

James P. Burtis

Deputy (uncredited)

Lynne Carver

Actress Holding Parrot (uncredited)

Billy Dooley

Porter at Seaplane Landing (uncredited)

Robert Homans

Police Stenographer (uncredited)

Rollo Lloyd

Hotel Clerk (uncredited)

Pietro Sosso

Night Watchman (uncredited)