The wickedest, most wonderful science-fiction story ever created in our - or any - time. Anything can begin at a party in California - and everything does in this bold masterwork by a grand master of science fiction.

When four supremely sensual and unspeakably cerebral humans - two male, two female - find themselves under attack from aliens who want their awesome quantum breakthrough, they take to the skies - and zoom into the cosmos on a rocket roller-coaster ride of adventure, danger, ecstasy, and peril.

Robert A. Heinlein (1907-1988) was the dominant science-fiction writer of the modern era, a writer whose influence on the field was immense. He won science fiction's Hugo Award for best novel four times.