- Episode Name:The Deductionist
- Air date:2/3/2013
- Summary:Sherlock pursues Martin Ennis (Terry Kinney), an unpredictable criminal, before he strikes again. During the investigation, Sherlock is forced to work alongside Kathryn Drummond (Kari Matchett), the FBI profiler who literally wrote the book on Ennis. Meanwhile, Watson faces eviction from her apartment.
