This collection is named for Guy Boothby's "A Crime of the Underseas"; but there are other tales in this book as well -- "The Phantom Stockman," "The Treasure of Sacramento Nick," "Into the Outer Darkness," "The Story of Tommy Dodd and 'The Rooster'," "Quod Erat Demonstrandum," "Cupid and Psyche," "Misplaced Affections," "In Great Waters," "Mr. Aristocrat," and finally "This Man and This Woman."