Ric, that's actually pretty similar to "Psycho." I'll admit I don't know what the trailers for it were like, but the first half-hour sets up what looks like the story of a thief on the run with a bunch o' loot. She stops for the night at a small motel off the beaten path and prepares for her next move, then the story takes a hard left turn when she takes a shower and finds herself getting poked in the belly in a decidedly un-Pillsbury-Doughboy-like way.