'A Crime of the Under-seas' is a collection of stories written by Guy Newell Boothby, and illustrated by Stanley Llewellyn Wood. The book contains one novella-length story, 'A Crime of the Under-seas', accompanied by around ten other short stories, such as 'The Phantom Stockman', 'Into the Outer Darkness', 'Cupid and Psyche', 'In Great Waters', and 'Mr. Aristocrat.'