The following is a list of the 43 titles which made up the original The Three Investigators series plus the unpublished 44th title. Click on a title to view scans of each of the published covers and to read detailed collector information about that title.
44. The Mystery of the Ghost Train - M.V. (Mary Virginia) Carey was working on this particular story when the series was canceled in 1987. An unfinished manuscript exists.
*My thanks to Tom Calhoun for providing the information on this last story.
