The Silent World of Nicholas Quinn

The Silent World of Nicholas Quinn is the third novel in Colin Dexter's Oxford-set detective series.
Morse had never ceased to wonder why, with the staggering advances in medical science, all pronouncements concerning times of death seemed so disconcertingly vague.
When the newly-appointed and gifted member of the Oxford Examinations Syndicate is murdered in his north Oxford home, so starts a formidably complicated homicide case for Chief Inspector Morse.
For tracking down the killer will involve navigating the insular and labyrinthine world of Oxford colleges . . .
The Silent World of Nicholas Quinn is followed by the fourth Inspector Morse book, Service of All the Dead.