Stated first printing, dated, with complete number line. Tight, flat, square book with edge wear and rubbed tips. Spine reinforced with librarian's tape (not ex-library). Previous owner's marks on the inside front wrapper. Pages toned, marginally darker. 

Michael Jahn started writing professionally as a New York Times reporter covering the rock'n'roll music scene for the  NYTimes in the late 60's. He penned the Six Million Dollar Man adventure series. He also wrote the Bill Donovan mystery series.

Nathaniel Broadsword, captain of the space shuttle, and his crew discover a huge spaceship approaching the Earth with apparently hostile intentions