Paper Mask is a 1990 British drama film directed by Christopher Morahan and starring Paul McGann, Amanda Donohoe and Tom Wilkinson. The screenplay concerns a hospital porter who decides to impersonate a doctor in a busy hospital. The film was based on a novel by John Collee, who also wrote the screenplay.
Matthew Harris is a young, lowly orderly working in a busy hospital in London who dreams of bigger and better job opportunities for himself. One evening, he witnesses a car accident outside a local pub where the driver of a car is killed after colliding head-on with a lorry. Harris learns that the man, named Simon Hennessey, was a doctor at the hospital where he works and had been applying for a residency at another hospital in Bristol. Harris takes the dead man's mail and fills out a job application and applies for the job himself under the late doctor's idenitity. After studying medical books and getting "hands on" involvement with other patients at his hospital, Harris applies for the job and is accepted. He quits his orderly job and settles in Bristol where he, as Dr. Simon Hennessey, is assigned to a busy emergency room.
Despite his lack of experience, Harris completes his first few days without incident. He meets and is soon aided by a friendly ER nurse, named Christine Taylor, who becomes smitten with the friendly "doctor" and who helps him through his busy first days. After saving the life of a woman in the ER, Harris becomes more competent and confident with his new job, but he also becomes more and more arrogant and corrupt by his newly acquired power and skill. Soon, both Christine and Harris begin an affair which complicates things. When a patient under Harris' care dies from his negligence, he is brought up on charges. But at his hearing, Christine takes the blame for the incident which gets her suspended from the hospital.
Things take another turn when one day, Alec Moran, one of the few friends that Harris had during his days while working as an orderly in London, runs into him, and Harris goes to desperate measures to protect his charade. When Harris takes Moran to a remote area and confides in him about his scam of impersonating a doctor, Moran takes it very badly and threatens to report Harris to the medical board. Harris follows Moran and pushes him off a cliff, resorting to murder to keep his job. However, Moran survives the fall critically injured, but long enough to be brought into the hospital for treatment. Harris tries to kill Moran in the ER and succeeds by injecting a blood bag for Moran's emergency surgery with poison.