Book 13


Book 22


Book 26


Book 33


Book 38


Three young detectives travel abroad to solve a mystery involving a silver spider and a political plot that endangers the life of a young prince.

Three young detectives undertake a case involving an Egyptian mummy that whispers, but only to one man.



Mystery of the Green Ghost

by Robert Arthur

Published 1 October 1965






The three investigators take on two mysteries: the disappearance of an ancient jeweled Japanese belt from a museum exhibit and the strange antics of a group of gnomes around an elderly woman's house.

Secret of Phantom Lake

by William Arden

Published December 1976
Three junior detectives investigate a mystery involving an Oriental chest, a sunken ship, and a baffling dual identity.