Cinematographer Gaetano di Ventimiglia hid the camera underneath Sir Alfred Hitchcock's bunk, in an attempt to avoid Italian duties. The unexposed film was confiscated, and the crew bought new film to shoot on-location, seriously depleting the budget. Later, the confiscated film was returned.
This is the first Sir Alfred Hitchcock movie more widely available. Number 13 (1922) is thought to be lost, and only one reel of Always Tell Your Wife (1923) has survived (and even then it's next-to-impossible to track down).