Watch What Lurks Beneath?! for Free: How to Stream the Movie Online at 123Movies. . An homage to the weird and wonderful world of B-movies, this short fauxdocumentary by film artist Chris Gerrard splices together classic clips with some new footage to tell the ludicrously fake story of the mysterious people (and things) lurking beneath us in the eerie River Tay. Feast your eyes on this unique archaeology of aquatic-themed film.