Do Nothing (Griffin Knight #1)

A serial killer is on the loose in New York City.

This wasn’t the kind of day Griffin Knight looked forward to when he woke up this morning. Sure, being a homicide detective is never unicorns and rainbows, yet knowing the victim of a murder scene is up there with some of the really bad days.
There’s an avenger on the loose in New York with all the hallmarks of a long-silent serial killer.
But how does this serial killer choose the victims? Do the victims share something in common? How many more names are on his list?

Can Griffin Knight cut through the questions this guy is throwing his way, or would there be another murder?