Originally published, Garden City [N.Y.]: Doubleday, 1970; London: Hamilton, 1970.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Jigsaw : an 87th Precinct mystery by Ed McBain. ISBN 0330231723. Published by Pan Books in 1972. Publication and catalogue information, links to buy online and reader comments.
