The Zephyr program is monitoring the progress of Britain's only spy satellite. When Zephyr goes briefly off the air, Hepton finds himself in danger and the mistrusted Dreyfuss, sole survivor of a shuttle crash, has the only key to the riddle that must be solved if both men are to stay alive.
Used availability for Ian Rankin's Westwind
September 1991 : UK Hardback
March 1990 : UK Hardback
March 1991 : UK Paperback