David Aaron Baker

A series of murders in Manhattan seems random at first, then the police fear that a serial killer may be copying the crimes of another decades earlier.

Danny tries to find the source of a deadly narcotic after three teenagers die from an overdose.

Saul attempts to track down those responsible for the Langley attack, recruiting an unlikely expert to follow the money trail. Quinn, troubled by the collateral damage from a recent mission, tries to take matters into his own hands. An embattled Carrie learns who is really on her side and the Brody family turns to therapy to mend their broken household.

The team searches for a serial killer who kidnaps and hangs his victims.

A chef and his patrons are poisoned after consuming a menu item tainted with snake venom; Detective Bell's crush on a colleague leads Holmes to a realization about his relationship with Fiona.

The brothers' competitiveness prompts them to seek their childhood I.Q. scores.