Cover image not available
Originally published (B67-18719) under the pseudonym Michael Halliday. London: Hodder & Stoughton, 1967.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Sly as a serpent by John Creasey. ISBN 0340106719. Published by Hodder Paperbacks in 1969. Publication and catalogue information, links to buy online and reader comments.