Dexter tracks down a serial killer in NYC as Harrison spirals from guilt.

Dexter must carefully balance attempts to help get him acclimated.

Dexter attends a mysterious gathering as Harrison struggles at work.

Harrison's fears escalate as Dexter pursues a dangerous connection.

As Dexter closes in on a narcissistic murderer, Harrison faces a crisis of identity while trying to find his place in the world. Meanwhile, Batista pursues the connection between the Bay Harbor Butcher and the recent killings in NYC.