"It started with a bloody corpse."

Two years ago, Mason Black was a detective, a husband, and a father...
until obsession with a killer drove him further from his family.
That life was left behind, until today.

Now a part-time PI, a familiar string of murders is pulling him back
into the cycle. Mason must choose between bringing the
killer to justice or remaining a humble family man.

With his marriage on the line, the police seek his knowledge
of the unsolved case, to help identify and track
down the psychopath.

But now he's too close to the Lullaby Killer,
who is driven to have a little fun...

at Mason's expense.