Sgt. Al Krug and his younger, college-educated partner Casey Kellog are investigating a string of strangulation killings when another victim is found at the Presidio…but a surprising, violent incident at the crime scene makes them wonder if everything is what it seems. The two miss-matched cops, with sharply conflicting approaches to detective work, are under intense pressure to get results. It’s a race-against-the-clock investigation that propels them into the deadly intersection of politics, real estate, media and vice… the fertile, fog-shrouded killing field of a ruthless murderer.