It could just be coincidence. It also could be revenge.

But hardened cop Frank Zimmerman doesn’t believe in coincidences. Neither does FBI profiler Nathan Thomas.

A drowned lawyer, a fatal car accident, a heart attack and a socialite’s lethal fall in front of a huge crowd all have their cop antennae pinging - hard.

They dig for evidence to support his theory of a trail of bodies that lead into the past.

What’s going on? And who will die next?