“Assignment: Istanbul” by Craig A. Hart, S.J. Varengo

Agent Perry Hall has one more chance to serve justice on his wife’s killer, a man he has sought for years. But now the pursuit lands Perry in the crosshairs of his own agency, as he defies a direct order to continue the chase. As three agents converge on Istanbul with orders to take him out, Perry races through the city streets, searching for the deadliest killer he’s ever faced.

From the dark underground of an ancient cistern to the lonely sound of the ezan, Istanbul comes alive in this thrilling adventure of high stakes espionage.