The Three investigators in The secret of Terror Castle, The secret of Skeleton Island, The mystery of the invisible dog
Arthur, Robert,1899-
Arthur, Robert,1899-Secret of Terror Castle.
Arthur, Robert,1899-Secret of Skeleton Island.
Carey, M. V.Mystery of the invisible dog.
London Fontana Paperbacks
1984
Author of The secret of Terror Castle and The secret of Skeleton Island: Robert Arthur. - Author of The mystery of the invisible dog : M.V. Carey based on characters created by Robert Arthur
The secret of Terror Castle. Originally published: New York : Random House, 1964; London : Collins, 1967 - The secret of Skeleton Island. Originally published : New York : Random House, 1966 ; London : Collins, 1968 - The mystery of the invisible dog. Originally published : New York : Random House, 1969, London : Collins, 1976