The Infernal Serpent

The fourth series opens with The Infernal Serpent, written by Alma Cullen and directed by John Madden, and it ranks among the most politically charged entries in the early run. Dr Julian Dear, a senior fellow and outspoken environmentalist, suffers a fatal heart attack while apparently being mugged on his way to a controversial debate at the Oxford Union, and is pronounced dead in hospital. The college Master, Matthew Copley-Barnes, stumbles on a young man leaning over the body and is shoved aside as the figure flees into the dark, and the circumstances of that missed appointment become the spine of the mystery.

Geoffrey Palmer's Copley-Barnes is the still centre of the unease, a man of impeccable standing whose composure begins to fray as Morse probes. The Master has been receiving strange packages, and the college holds substantial investments in Corby International, a bio-agricultural and chemical concern whose interests Dear's research plainly threatened to expose. Cheryl Campbell's Sylvie Maxton, a journalist profiling the Master, supplies the pressure from outside, and her persistence underscores how much reputational capital is at stake. Barbara Leigh-Hunt, as Blanche Copley-Barnes, lends the household a chilly elegance, and George Costigan's Ron Garrett — the Master's son-in-law — sits uneasily inside the family circle rather than outside it. Dear had been due to speak at an Oxford Union debate, and his fatal heart attack during what appeared to be a mugging is soon read as something more deliberate.

Madden directs with a cool, unhurried grip, letting the ivory towers and wood-panelled common rooms carry a quiet menace, and the script slowly exposes a buried scandal far uglier than academic rivalry. The whistleblower who sets Morse on the truth is Mick McGovern, and the investigation reveals that the Master abused children, among them Maxton and the daughter of a college employee, Hopkirk — a separate strand of guilt that the household has laboured to keep quiet. Tom Wilkinson's Jake Normington widens the cast of guilty knowledge. Cullen resists the temptation to tie everything with a bow: the episode closes on the particular Morse note of a victory that leaves the chief inspector uneasy about how much was truly recovered, and which of the respectable will ever be called to account. Palmer and Leigh-Hunt make the Copley-Barneses a pair worth studying, their courtesy a mask for dread, and the college's money proves to have been deployed to bury the truth rather than reveal it. The episode's strength is that it treats environmental science and personal depravity as equally capable of producing a body, and Madden's direction keeps the camera low and watchful, as though the stone itself were listening. It stands as proof that Morse's finest cases are rarely about who swung the blow but about who decided the scandal was too expensive to survive. The college's investments in Corby International give the environmental angle a corporate spine, and Dear's unpublished findings, had they surfaced, would have embarrassed far more than one don. Costigan's Garrett, bound to the family by marriage rather than conviction, embodies the difficulty of speaking against one's own, and Wilkinson's Normington rounds out a circle of men who knew something and said little. Morse, for once, is less the lone genius than the man willing to follow the ugly implication to its end, and the resolution favours the quiet accumulation of testimony over any single flash of insight.