The Trygon Factor (1967, dvd)

Synopsis: Fake nuns set up a million-dollar heist in this farcical British crime drama. Stewart Granger is the Scotland Yard detective called in to investigate a convent situated on the grounds of Cathleen Nesbitt's stately home; Susan Hampshire is her photographer daughter.

Blackly comic at best, the film boasts a cast of British stalwarts including Robert Morley and James Robertson-Justice, but they just end up milling around in the hope of being directed by Cyril Frankel. Unfortunately for them, he never gets to grip with that task.

The Trygon Factor dvd details:
Cast: Stewart Granger, Susan Hampshire, Robert Morley.
Runtime: 94 min