The Death Cap

The Death Cap is a 1946 mystery detective novel by the British author Ruthven Todd, written under the pen name of R.T. Campbell. It was one of several novels featuring the botanist and amateur detective Professor John Stubbs.

Synopsis
After a young woman belonging to a Bohemian group of artists is poisoned by the death cap mushroom, the domineering and boorish Stubbs sets out to solve the case despite the objects of Chief Inspector Bishop of Scotland Yard.