The end credits list Vincent Price as Frederick Loren. Price died in 1993. His appearance in this movie was actually a clip from the 1959 film House on Haunted Hill.
There are 3 extra scenes interspersed with the closing credits.
Near the end of the credits and before the final extra scene it says "This Film is Dedicated In Loving Memory To Jessicah Jane Ostrus June 15, 1954 - January 10, 2009"