Trying to find the name of a movie, played a drive in around 1967, in southern California. Was considered a B movie, no known stars etc. Thought name was The Apartment or the Penthouse about some guys that break into a penthouse apartment and terrorize the couple that lives there... thank you!

Title : The Penthouse
Director: Peter Collinson
Writers: Peter Collinson (writer) and Scott Forbes (play)

Wow! Thank you suhari! That was an amazingly quick response... I had spent almost 2 hours trying to find it with no luck!

Do you know where you can buy old movies like that?