The Bat (1959)

A murder mystery author rents a mansion for the summer, an event that's nothing to write home about in itself, but around the same time a very large sum is embezzled from the local bank and the mansion's owner disappears. Thereafter the mansion gets a lot busier and more dangerous.
It's a standard Sunday afternoon whodunit that gets a little silly at times, but the inclusion of Agnes Moorehead as the author and Vincent Price as a somewhat secretive doctor is too good to pass up. There are some real bats, but the title refers to a 'faceless' killer with the moniker of 'The Bat'.

3 clawed-fingers out of 5