There are stars of the horror movie genre like Vincent Price, Boris Karloff, Bela Lugosi, Peter Lorre, John Carradine, Peter Cushing, and Christopher Lee just to name a few. And then there are Old Hollywood stars who took parts in horror films that were unexpected. Some Old Hollywood actors took the roles in horror films in desperation because they weren't being offered anything else. Others took the roles because they found it to be a different change of pace. Irregardless of the reasons why they took the roles in these films or whether it was a success or not, watching a seasoned, professional actor like Gregory Peck or Ruth Gordon act in a spooky film makes the film so much more thrilling to watch.