Professor Odd: The Elder Machine: Professor Odd #4

In a universe much like our own, Professor Alister Bane lives a quiet life as an archeologist at Oxford University. But when a nearby excavation triggers a psychotic episode in one of his colleagues, Professor Bane finds himself tumbling down a rabbit hole of strange phenomena and frightening possibilities. Having to contend with a slew of disappearing interns and his own terrifying hallucinations, Alister Bane finds his mind-and his whole world-unraveling even as he searches for a solution...