Pathfinders in Space (1960)

Professor Norman Wedgwood and his team are planning another rocket mission to the Moon. Once again, Geoff, Valerie and Jimmy are on hand to witness the launch of a new rocket MR1, along with journalist friend Conway Henderson. However, when the automatic supply ship MR2 fails to launch Henderson and the children make a desperate rescue attempt with Jimmy's pet Hamlet.

Sci-Fi & Fantasy, Family