This horror movie has very British sensitibilities, and you couldn't ask for a better, more entertaining introduction to the type of horror movie that was popular in the 1970s, before the era of the slasher film. It's stylish and very proper, making the gore that much more shocking.
Basically, we've got a handful of "short stories" very loosely pulled together with the framing device of a psychologist visiting the asylum being asked to "figure out" which of the patients was actually the former director of the hospital. There's very little to this part of the plot, but the various stories the patients have to tell do create varying degrees of chills.
None of the stories are great, nor are they especially surprising, but they are told quite nicely and are better acted than such low-budget stuff has a right to be. Some outstanding actors such as Herbert Lom and Charlotte Rampling are featured, along with a brief but creepy turn by Peter Cushing (who, along with Christoper Lee, owned this genre of horror movie).
In many ways the film is a period piece, not so much about an era of history, but about an era of film history. It distills the style and sensibilities of the Hammer films (so called because they were made in England's Hammer Studio) into one neat, entertaining package. Will this be your favorite movie ever? Nope. But is it an amusing diversion and a wonderful slice of what was once the height of horror film making? You bet.
Check it out!