John (The Blue Geranium)

John is a character created for the 2010 ITV adaptation of the short story The Blue Geranium. John is the gardener of Miss Marple. At the beginning of the show, he is mixing cyanide to make a wasp trap. Miss Marple looks at the jar and suddenly realises that her conclusions about the "Blue Geranium" murder might be wrong (most of the show is a plot told in retrospect) and that the wrong man might be hanged.

The part of John is played by Ian East.