The first title published by Silver Age Books, this features the return of Arthur Conan Doyle's great science-hero, Professor Challenger. He returns, that is, but only to set off on new and terrifying adventures across the galaxy! First he gathers together the old gang - Professor Summerlee, Lord Roxton, and the journalist, Edward Malone - and then they are off on the one journey they never before undertook - into space! They meet unusual new friends, encounter vicious new enemies, and at least one of the party falls victim to violence! Another may well fall in love! And the others are sure to talk, argue, drink whisky and smoke cigars, if nothing else! This is the debut novel of the author, Stephen William Theaker, and as well as the return of Professor Challenger and his friends, it features the first appearance in a novel of the cult characters Master Zangpan, the Mechanical Housewife and Milon the Assassin.