 Original 'The Three Investigators (1964-1987)' series published by Random House (world's largest general-interest trade book publisher) in English had 43 books written by Robert Arthur (10 books), William Arden whose original name was Michael Collins (13 books), Nick West (2 books), M. V. Carey or Mary Virginia Carey (15 books) and Marc Brandel (3 books).Two movies in English were made by a German-South African production house.The first movie was ‘"The Three Investigators and the Secret of Skeleton Island" (2007)’ and then ‘"The Three Investigators and the Secret of Terror Castle" (2009)’.