Who wrote the 'Gervase Fen' series of mystery novels?

Edmund Crispin wrote the Gervase Fen series of mystery novels. Crispin was the pen name of Robert Bruce Montgomery, an English writer and composer whose scholarly detective stories combine intricate crimes with wit, literary allusions and deliberately eccentric characters.

Gervase Fen is an Oxford professor of English and an amateur detective. He first appeared in The Case of the Gilded Fly, published in 1944. Fen’s academic background is central to the series: his knowledge of literature and university life often becomes part of how he interprets clues, motives and deceptive performances.

The books frequently use classic mystery devices, including locked-room problems, but Crispin’s tone is more playful and self-aware than a straightforward police procedural. The Moving Toyshop, the third Fen novel, is especially well known and was later adapted for television. Crispin also published Fen stories in collections, including Beware of the Trains and Fen Country.

The wrong options are names of other Golden Age crime writers, which makes them plausible distractors. Nicholas Blake, Michael Innes and Cyril Hare each created their own detective traditions, but none wrote the Gervase Fen series.