1. The mysterious X Record type: document Document type: article Document author(s): John Gillett Publication date: 1966 Spr Document source: Sight and Sound Number of pages: 2 Related films: Det hemmelighedsfulde X (The mysterious X) — Christensen, Benjamin — Denmark — 1914Haevnens nat (Night of revenge) — Christensen, Benjamin — Denmark — 1916Häxan (Witch) — Christensen, Benjamin — Sweden — 1922