ALTERED STATES

Essentially Dr Jekyll And Mr Hyde if it'd been written by Carlos Castenada, Ken Russell's characteristically unrestrained take on a script by Network's Paddy Chayefsky is a bracing mix of acid trip visuals and hoary old tropes.

- lan Berriman

William Hurt seems slightly miscast (insufficiently beardy weirdy) as a Harvard professor obsessed with combining hallucinogenic mushrooms acquired from a Mexican tribe and sensory deprivation. This eventually causes him to regress to an earlier stage of human evolution.