hotel, clerk, detective, shower, arizona, motel, halloween, stolen money, alter ego, taxidermy, money, murder, secretary, serial killer, slasher, psychological thriller, black and white, corpse, murderer, theft, overbearing mother, stabbing, mental illness, private detective, missing person, split personality, psycho, voyeurism, voyeur, oedipus complex, nervous, double identity, abusive mother, dual personality, proto-slasher, multiple personality disorder, mother son relationship, birds, motel owner, woman on the run, corruptibility, confused identities, human vulnerabilities, man with female alter ego,