People who complain about the predictability of this film miss the quality. Just as with a sonnet you can expect a number of lines and syllables, and some occasional tweaking of the language to fit, so you can expect style and structure fitting a well rehearsed pattern. You have the gothic mansion, a former monastery, with secret doors and passages, an organ playing in the night (no one operating the bellows) and a detached but eerie chapel. The place is a guest house/ private house with a staff including Irene Handel as kitchen maid, Kathleen Harrison as the house maid playing the sorts of parts they played for decades. There is a lost £300,000 in stolen gold, two gaolbirds who, after ten years, waaant to recover it, and get the organiser of the gang who betrayed them. Star turns are Alistair Sim as a crook disguised as a dotty vicar, and James Bond's 'M' as a serial drunk. A number of murders and the melodramatic denouement complete the early 20th century stage play, transferred to film. The style of acting reminds us that several of the performers were already on stage when Victoria died, and the elocution and style were necessary to project across large audiences before sound films came along. The formula for a stage play is all there, including the expected 'crisis'. Worth a watch.