Moriarty Makes His First Big Move Ahead of 'Watson's Season 1 Finale

Before his time at Scotland Yard with Sherlock Holmes, John Watson (Morris Chestnut) was also an Army medic, according to this week's episode of Watson. John and Mary (Rochelle Aytes) were enjoying another cozy evening coffee date when he was called back to the hospital by a former Army buddy of his, Dean Kett (Robert Bailey Jr.). Dean was experiencing prolonged delusions, which John believed were his fault because of what happened during their time in Afghanistan.

John enlisted in the military to pay for his medical school education, but he never truly adopted the mindset of a soldier. He found a woman with a rare genetic condition in the Afghanistani village his unit, led by Dean, was staying near. John was performing an introductory exam on the woman when Dean told him they needed to leave the area immediately. However, John hesitated because he didn't want to let the woman go. That hesitation was enough time for a young boy to detonate a bomb built into his bicycle, killing two unit members and costing Dean his leg.

In the present day, John was overwhelmed with guilt over what happened and was ready to do anything to figure out what was causing Dean's increased distress. As John focused on mending this critical relationship from his past, Moriarty (Randall Park) was finally making big moves. He may have successfully eliminated one of our fellows by the end of the episode, and John still doesn't know he has two traitors working directly under him.