Ole Søltoft as Jack Armstrong (as Ollie Soltoft)

Sue Longhurst as Alice Faversham

Charlie Elvegård as Samson (as Charlie Elvegard)

Malou Cartwright as Penny

Martin Ljung as Jack the Ripper (as Martin Young)

Diana Dors as Madame Helena

Göthe Grefbo as Judge Pettibone (as Joe Grey)

Steven Lund as Young Jack

Larry Leonard as Mr. Pendleton

Per-Axel Arosenius as Rev. Faversham

Julie Bernby as Mrs. Faversham

Börje Mellvig as Police Inspector

Nils Eklund as Police Officer

Barbro Hiort af Ornäs as Jack's Mother

Egil Holmsen as Jack's Father

Tina Möller-Monell as Marion Faversham

Bengt Olsson as Marion's husband

Rolf Bengtsson as Museum manager

Berit Agedal as Girl at Madames house

Inger Sundh as Girl at Madames house

Vivi Rau as Girl at Madames house

Marie-Louise Fors as Girl at Madames house

Lena Andersson as Prostitute