After a Wall Street investor is murdered, the team is led to an insider-trading ring that uses unconventional methods to gain information. OA struggles to maintain confidence in his budding relationship with Mona.

A former kidnapping victim is linked to a series of murders that includes the daughter of an NYPD detective. Also, Kristen begins to doubt her ability as an agent after a training exercise leaves her shaken.

The team must track down two assailants who wear animal masks while committing armed robberies, with the latest leaving an off-duty 26 Fed security guard dead. Also, Tiffany and Scola butt heads on whether or not to accept the local NYPD’s offer to help in the investigation.

The team rushes to track down two doctors abducted by a desperate father willing to do anything to save his son. Also, Jubal's uncertainty in his family life affects his judgement during the hostage situation.

As the team investigates a string of jewellery store robberies that culminate in a double murder, they uncover a connection to a 16-year-old boy trying to survive the foster care system. Tiffany becomes personally invested after learning about the boy's ill-fated upbringing.

Maggie returns from medical leave in time to help the team investigate two homicides: a law student on track to attend the FBI Academy and a young man with possible gang ties. Also, an inadvertent revelation from Maggie causes OA to worry that she is rushing back into the job too quickly.