Vincent Price

Simon Cordier

Nancy Kovack

Odette Mallotte

Chris Warfield

Paul Duclasse

Elaine Devry

Jeanne D'Arville

Ian Wolfe

Pierre

Stephen Roberts

Captain Robert Rennedon

Lewis Martin

Father Raymonde

Mary Adams

Louise

Edward Colmans

Andre D'Arville

Nelson Olmsted

Dr. Borman

Harvey Stephens

Louis Girot

Don Brodie

Marcel

Joseph Ruskin

The Horla (voice)

Dick Wilson

Reginald Le Borg