The Silent World of Nicholas Quinn

Morse's second case is a study in the difference between hearing and understanding. The Silent World of Nicholas Quinn, adapted by Julian Mitchell — the playwright whose stage success Another Country had made his name — from Colin Dexter's third novel, opens in the hushed corridors of the Foreign Examination Syndicate, an Oxford institution that sets English-language papers for students across the globe. It is a world of tea trolleys and timetables, of careful men and women convinced that nothing scandalous could happen among them. They are wrong.

The Syndicate's youngest member, Nicholas Quinn, is found dead in his cottage, poisoned with cyanide. The police are puzzled, then comfortable: Quinn was profoundly deaf. A man who cannot hear, the reasoning goes, cannot have overheard anything worth killing for. Morse, played by John Thaw with deepening authority, understands at once that this is exactly why Quinn died. Deafness had made Quinn a perfect witness — he read lips with the fluency of a man who has lived his whole life at the edge of sound — and he had watched, unseen, a conversation that was never meant to be seen. Someone at the Syndicate was selling examination papers to buyers abroad, and that someone had realised that the deaf newcomer could lip-read his own death warrant.

The suspects are a gallery of English respectability at its most plausible. Michael Gough, a screen veteran who would later find a second career as Alfred in the Batman films, is Philip Ogleby, the crossword compiler whose murder follows Quinn's — he is found bludgeoned to death after coming too close to the Syndicate's real puzzle. Clive Swift, forever loved as Richard Bucket of Keeping Up Appearances, brings a silky, faintly menacing courtesy to Dr Bartlett, the Syndicate's head; Roger Lloyd Pack, later famous as Trigger in Only Fools and Horses, is the smooth administrator Donald Martin; and Frederick Treves' Dean of Lonsdale College embodies the university's instinct to close ranks. Best of all is Barbara Flynn as Monica Height, the cool young woman who may or may not be part of the corruption — Morse, hopeless as ever in such matters, is smitten, and his clumsy flirtation with a possible accomplice gives the episode its wryest comedy. Elspet Gray's Mrs Bartlett hovers watchfully at the edges.

Throughout, the episode does something the series would do again and again: it makes the victim's disability the key to the case rather than a sentimental detail. Quinn's world was silent, but it was not blind, and the killer's fatal error was to confuse the two. Morse, whose own deafness to the people around him is a running theme of the series, recognises a kinship he would never admit. Director Brian Parker builds the mystery from quiet observation rather than shocks: a party, a glance, the exact geography of a room. The great set-piece is Morse's demonstration that lip-reading works clearly across a room — a chilling rehearsal of the moment Quinn must have realised what he had seen. The final confrontation, in which the respectable facade of the Syndicate is peeled back layer by layer, is handled with the restraint the series would make its trademark: no fireworks, just the slow, terrible arithmetic of motive. Morse solves the case, and the solution leaves him less satisfied than vindicated — the institution that destroyed Nicholas Quinn will close ranks again before the week is out. The Silent World of Nicholas Quinn is the series at its most Oxford: civilised, musical, and quietly ruthless.