L'assassino è alla porta

Guss Hawkins' house 42 Errwood, Crescent, Manchester, UK

The Star and Garter, Fairfield Street, Manchester, Greater Manchester, England, UK

Refuge Assurance Building, Oxford Street, Manchester, Greater Manchester, England, UK

The Fatted Calf, Cromford Court, Manchester, Greater Manchester, England, UK

Manchester, Greater Manchester, England, UK

Associated British Elstree Studios, Shenley Road, Borehamwood, Hertfordshire, England, UK