Title: Horror Hospital
Jason, a member of a 1960's pop group, decides he needs a break at a country retreat. On the train he meets Judy, niece of Aunt Harris who owns the place with her husband Dr Storm and who are using the guests for surgical mind-control experiments. So while Jason and Judy are pretty quickly making out, they are just as quickly working out how to get away.
Antony Balch (screenplay), Alan Watson (screenplay)