Holmes and Kitty investigate the murder of a postal store owner whose death is connected to the illegal diamond trade. Meanwhile, Gregson's career is placed in jeopardy when he hits a fellow NYPD officer.
Time Is Dancing — Ben Howard
Gregson thanks Kitty; Sherlock tells Kitty that was right about Watson then tears up their NDA and tells her that she's welcomed write her own memoir of their adventures if she wishes.