The nova effect makes the H-bomb look like a kitchen match--one bomb can vaporize an entire planet. An undercover agent carrying the secret of this weapon must defeat an insane opponent, one who has decided that when she dies, the Earth will go nova with her. Heinlein's New York Times bestseller Friday was a sequel to this volume.

Compelling science fiction adventure from New York Times bestseller Robert A. Heinlein: two classic novellas, Gulf and Lost Legacy, and two short stories with speculation on what makes us human. Compelling science fiction adventure from New York Times bestseller Robert A. Heinlein: two classic novellas and two short stories with speculation on what makes us human. Gulf: in which the greatest superspy of them all is revealed as the leader of a league of supermen and women who can't decide on quite what to do with the rest of us. The prequel to Heinlein's later New York Times best seller, Friday. Lost Legacy: in which it is proved that we are all members of that league of the superhuman–or would be, if we but had eyes to see. Plus a double dose of great short stories, with two of the master's finest: one on the nature of being, the other on what it means to be a man. The second story, "Jerry Was a Man," was adapted for the TV series Masters of Science Fiction, and is now available on DVD. About Robert A. Heinlein: “Not only America's premier writer of speculative fiction, but the greatest writers of such fiction in the world.”—Stephen King. “One of the grand masters of science fiction.”—Wall Street Journal

Captain Kirk first encountered Gary Seven on twentieth-century Earth. Now Seven, a time-traveling operative for unknown alien forces, makes a surprise visit to the U.S.S. Enterprise. Kirk is on an urgent mission to bering relief to a disaster ravaged planet, but Seven has an agenda of his own -- and he's not above hijacking the Starship Enterprise and sending it on a perilous journey deep into the heart of the Romulan Empire. Kirk must date to trust Gary Seven once again, as he confronts the possibility that the enigmatic stranger may bring death and destruction to Kirk's own era.

Tells the stories of a secret league of supermen, telepathic powers, a genetic engineering project, and time travel.