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.

When the Machine directs Reese and Finch to a former soldier with shady connections to a crime ring, Reese must infiltrate the gang, taking part in their heist.