Description (from back of video box)

Box office favorite and perennial villian Klaus Kinski stars in this horrifying and gruesome thriller as a crazed maniac who is obsessed with trapping young women and then slowly torturing them to death.
Karl Guenthr (Kinski) is a conscientious landlord who looks out for his young soap opera star, Harriet, a sensuous and vivacious secretary and Sophie, an accomplished pianist who enjoys wild fantasy sex with her boyfriend... all live in Karl's well kept apartments. The only discord is the "tap, tap, tap" sound at night from the crawlspace above their rooms. Karl tells them it's rats, but in reality it is karl spying on them. One by one the tenants become his victims... each one put to a gruesome test. Only one tenant remanins to disclose the diabolical Karl and she enters the crawlspace - she is alone with a madman capable of anything!
Enter Crawlspace ... and enter a new dimension of terror!

Leonard Maltin Review:

Shameless imitation of PEEPING TOM, as Kinski spies on young women from his apartment's hidden crawlspace area and then kills them, the legacy of his father having been a Nazi war criminal.

Maltin Rating: No Stars

Mick Martin Review:

Terrible imitation of the classic PEEPING TOM, with Klaus Kinski as a sadistic landlord who engages in murder and voyeurism.

Martin Rating: No Stars