While Reese and Finch deal with a new Number, Root abducts Sam to force her to help on a mission for The Machine.
Sherlock discovers a long hidden crime while investigating a bombing. Watson pushes Sherlock to choose a sponsor.
The team battles mistrust and prejudice from all sides when it investigates the abduction of a Romani boy who was last seen on his way home from school.
Ellen is cleared of murder charges while Frobisher agrees to settle with his former employees. A surprising flashback reveals why Patty went to the cemetery. Meanwhile, Hollis Nye plays a role in Ellen returning to work for Patty.moreless