The Hothouse.

"A black comedy set in a government-run mental institution, The Hothouse revolves around a sinister murder plot hatched against a backdrop of corruption, sexual favors, and hopeless bureaucratic ineptitude. Beneath the surface comedy there are frightening implications concerning a bureaucracy ostensibly dedicated to humanitarian concerns, but where people are referred to by numbers and forgotten as easily as troublesome figures on a balance sheet. Written in 1958, The Hothouse was first performed at London's Hampstead Theatre in April, 1980, in a production directed by Pinter himself."--Jacket.