The book is a work of nonfiction describing the history of the Space Race from Sputnik 1 to the Apollo-Soyuz Test Project. It includes depictions of many American space missions and several Soviet space missions. Emphasis is placed on Shepard's and Slayton's roles in the events in the craft and behind the scenes, as both were early leaders in NASA's Astronaut Office due to being grounded for medical reasons (Slayton for a heart condition, Shepard for Meniere's disease).
The book generated controversy on release for its historical accuracy, in particular its use of an artist-created composite image of Alan Shepard playing golf on the moon presented as if it were a real photograph. In NASA's Apollo Lunar Surface Journal , space historian Andrew Chaikin comments that the photo is "a composite made up of pieces of various Hasselblad images.... the ball and the shadows of the S-Band legs - like the golf club - appear to have been drawn in."
James Scotti, Senior Research Specialist of the Lunar and Planetary Laboratory of the University of Arizona, has stated of the book "Ghost written by Jay Barbree and Howard Benedict, it is clear from the relatively large quantity of errors that this book was not very carefully reviewed ....Use caution when quoting its 'facts'."