Ambitious male nurse Matthew gets himself appointed as a doctor at a Bristol hospital, using the papers of a real dead doc, gaining nurse Christine as an admirer who believes his 'forgetfulness' is due to his nerves. It's not long however before a lack of knowledge leads to deadly consequences.
Hospital porter Paul McGann gets away with impersonating a doctor, and gradually comes to enjoy his role to such an extent that he starts killing people.
The really scary idea is that McGann is more convincing when he starts making lethal mistakes rather than demonstrating his medical knowledge. Unusually for a British film starring McGann and Amanda Donohoe, this is actually quite interesting.
Hooking you in quite easily on such a simple premise, this proves consistently engaging