Elizabeth Masucci

Sherlock pursues Martin Ennis, an unpredictable criminal, before he strikes again. During the investigation, Sherlock is forced to work alongside Kathryn Drummond, the FBI profiler who literally wrote the book on Ennis.

The Machine alerts Finch and Reese to a seemingly innocent former Marine, who turns out to belong to a gang of ex-military bank-robbers. Reese must infiltrate the gang, taking part in their heist. Meanwhile, Detective Carter continues his quest to find out who Reese really is.

An issue with his back hinders Hank's ability to treat patients; Dr Van Dyke fills in; Divya and Jill work to save a thief.