This volume of 2 Detectives brings together two female detectives by the same author. Grant Allen's protagonists, Miss Cayley and Hilda Wade are determined, smart, and resourceful. They join the ranks of the early independent female adventurers who paved the way for the modern female detective. Miss Cayley's intrepid spirit finds numerous adventures as she makes something of herself, even when she finds she must fight against a criminal deceit that would rob the man she loves of his fortune and freedom. Hilda Wade is unswerving in her aim to unmask her father's cold-blooded killer, and bring him to justice, even if he is one of the most intelligent, and respected, of men.