Incense for the Damned

Incense for the Damned also released as Bloodsuckers, Freedom Seeker and Doctors Wear Scarlet is a 1970 British horror film. Starring Patrick Macnee, Patrick Mower and Peter Cushing, it is based on the 1960 Simon Raven novel Doctors Wear Scarlet.

Shooting took place in part in Greece and Cyprus. Money ran out during production causing filming to halt in the spring of 1969 it resumed later on. This involved writing of new scenes with new actors and a new director. Robert HartfordDavies, the original director, subsequently disowned the movie.

Source: Wikipedia