Yeah, made quite an impression on me. It offered an alternative theory about ghosts with the stone fabric of buildings storing emotional memories of shocking events. Bombarding the walls with strobes and pulsed sound released these hauntings, with th eusual horrific events. The clever twist was that a bunch of techies (pre dvd, pre mobiles and probably pre PCs) suspected this and thought harnessing it would prove the new recording medium.

Pity it never worked though!