Broadcast: 18th March 1952

Starring: Elspeth Eric, Maurice Tarplin, Frankie Thomas, Jan Merlin, Peter Capell

Added: Mar 31 2008

Assigned to escort Barton Reed a special messenger from Venus with Space Academy, Tom Corbett and Roger Manning are tricked and Reed is killed while under their charge. Taking a desperate chance the cadets set out to find the actual killer.