The Contract - Gerald Seymour

Set against a backdrop of the treacherous East/West German border, this tells of the journey into redemption for a disgraced British army officer who requires the defection of a top flight Soviet scientist.

Discharged from the British Army in disgrace, Johnny Donoghue is eager to redeem himself. His task is to slip undercover into East Germany and persuade a prominent scientist working on Soviet missile systems to defect.But no one warns Johnny of the dangers involved in crossing the border, nor can he ever imagine the effect the actions of fickle politicians will have on his task. 

Nothing can prepare Johnny for the impact of the momentous decision the scientist will be forced to make, and no one could have predicted the involvement of the scientist's headstrong daughter . . .