
"It starts with a shriek of a train whistle... and ends with shrieking excitement!"
A charming psychopath tries to coerce a tennis star into his theory that two strangers can commit the perfect crime by exchanging murders—each killing the other’s most-hated person.
Guy Haines

Anne Morton

Bruno Antony

Sen. Morton

Barbara Morton

Miriam Haines

Mrs. Antony

Mr. Antony

Police Capt. Turley

Prof. Collins

Mrs. Cunningham

Det. Leslie Hennessey

Tennis Umpire (uncredited)

Det. Hammond (uncredited)

Man Under Merry-Go-Round (uncredited)

Man Boarding Train Carrying a Double Bass (uncredited)

Train Passenger (uncredited)
Party Guest (uncredited)
Linesman (uncredited)
Tennis Match Spectator (uncredited)
Policeman (uncredited)
Boatman (uncredited)

Dowager (uncredited)
Police Officer (uncredited)
Tennis Match Spectator (uncredited)
Tennis Judge (uncredited)

Carnival Patron (uncredited)
Blind Man (uncredited)
Anthonys' Butler (uncredited)

Miriam's Boss (uncredited)
Fred Reynolds (uncredited)
Detective at Merry-Go-Round (uncredited)

Girl on Carousel (uncredited)
General - Party Guest (uncredited)

Policeman (uncredited)
Party Guest (uncredited)

Party Guest (uncredited)

Miriam's Boyfriend (uncredited)

Train Passenger Requesting Light (uncredited)

Tennis Match Spectator (uncredited)
Bus Driver (uncredited)
Party Guest (uncredited)
Lt. Campbell (uncredited)

Carnival Game Proprietor (uncredited)

Secretary (uncredited)
Mrs. Joyce (uncredited)

Mortons' Butler (uncredited)
Tennis Match Spectator / Carnival Attendee (uncredited)

Detective at Carnival (uncredited)

Police Desk Sergeant (uncredited)
Boy with Balloon (uncredited)
Policeman at Merry-Go-Round (uncredited)

Bystander at Drain (uncredited)
Party Guest (uncredited)
Bystander at Drain (uncredited)

Judge Donahue (uncredited)

Seedy Man at Carnival (uncredited)

Boatman (uncredited)
Miriam's Boyfriend (uncredited)
Madame Darville (uncredited)

Party Guest (uncredited)

Tennis Match Spectator (uncredited)

Carnival Patron (uncredited)

Bystander at Merry-Go-Round (uncredited)

Dowager (uncredited)

Train Passenger (uncredited)
Monsieur Darville (uncredited)

Bystander at Merry-Go-Round (uncredited)

Minister (uncredited)
Cop (uncredited)

Girl (uncredited)
Carnival Patron (uncredited)
Girl (uncredited)
Mrs. Anderson (uncredited)
Soda Jerk (uncredited)
Waiter on Train (uncredited)
Bill (uncredited)

Carnival Patron (uncredited)
Bystander at Drain (uncredited)