1993 1st edition (mfg. code 10-1); G.P. Putnam's Sons publishers, New York; hardbound in blue boards with gilt stamp lettering on cover and spine; very good condition with unmarked pages; dust jacket very good.
 
goodreads review -
Harry Lyon was a rational man, a cop who refused to let his job harden his soul. Then one fateful day, he was forced to shoot a man--and a homeless stranger with bloodshot eyes uttered the haunting words that challenged Harry Lyon's sanity:

"Ticktock, ticktock. You'll be dead in sixteen hours...Dead by dawn...Dead by dawn...Dead by dawn..."