Doctor Crippen

Dr. Frank Crippen

Chief Inspector Düwell

Cora Crippen

Lucie Talbot

Arnoldi

"Montrose"-Captain Kendall

Crippen's Attorney

Prof. Morrison

Dr. Hidden

Pharmacist Harras

Petersson

Michels

Nicolin

State Attorney

1st Officer

Menton

Julie

Bertha

Pedro

Mr. Martinetti

Mrs. Martinetti

Medical Examiner

Rosy

Acting