Frank enlists the help of an old friend, Sloane Thompson (Alex Kingston), to investigate a cyber-attack on the NYPD that forces Danny and Baez to release an evasive suspect. Also, Baez questions her place within the NYPD.
When NYPD responds to the scene of an active shooter in a nearby hospital, Shaw is shocked at his connection to the suspect. Maroun and Price face a difficult trial when the defendant offers up an insanity plea.
