March 12, 1978
Did Commander David Wheeler deliberately alter his ship's course to smash into and sink a mysterious vessel? His son, Richard, is ...Read more
March 19, 1978
The three friends escape their pursuers, sail through a naval minefiled and encounter a mysterious unmanned ship. A house in a fis...Read more
March 26, 1978
The trio continue to evade their pursuers. They examine the map and decide to investgate Scudmoor - does the dark Gothic mansion h...Read more
April 2, 1978
Richard, Lucy and Peter escape with the Doombolt secret that will clear Commander Wheeler's name, but before they can deliver it, ...Read more
April 9, 1978
As Richard, Lucy and Peter try to escape from Vallance in the wilds of the Welsh mountains, Bayard prepares to fire his experiment...Read more
April 16, 1978
The boys distract Vallard while Lucy makes a break for freedom. They are taken to Cragfest - a remote place surrounded by armed gu...Read more