Jamie gets Danny involved when he finds a homeless teen who claims his aunt was killed by her boyfriend. Meanwhile, Erin is angered when McCoy replaces her as the prosecutor on a case involving a corrections officer.
When scholarship funds from a prestigious Manhattan prep school mysteriously disappear, Neal poses as a substitute teacher to help Peter and the FBI figure out where the money is really going.
Tensions rise when Holmes and Watson are forced to partner with Gareth Lestrade, Sherlock's former Scotland Yard colleague, on a bombing investigation. Sean Pertwee guest stars as Gareth Lestrade.
When Bull assists Jules Caffrey, a high-powered attorney on trial for his fiancée’s murder, he takes advantage of his client’s penchant for courtroom theatrics by letting him defend himself.
Logan and Wheeler find themselves at odds with the fire department when a firefighter is found stabbed to death.