Complete story — includes the ending
Sherlock deduces that someone has taken charge of Moriarty's organization. Morland's office is bombed by the Russian hitman. This leads Sherlock to economics professor Joshua Vikner. Not only is he the head of Moriarty's organization, he is also the father to her daughter. New evidence on the hitman surfaces, after which Morland appears at the brownstone trying unsuccessfully to coerce Sherlock into giving up the name of the caretaker. The Russian hitman is arrested, but does not share any useful information. Sherlock notices corrosion on his belt and a distinct smell, identifying what propellant was used in the bombing. This points to the upstate theft of a pesticide barrel and a missing person. Meanwhile, Vikner summons Sherlock to discuss a possible truce with Morland. However, Sherlock says that Morland will only be satisfied with his death. As the team prepares for an interview with the DA, the prisoner is assassinated in a murder-suicide by a rookie cop who turns out to be one of the psychopaths flagged in the DANTE survey. When Sherlock and Joan return home, they find a bomb identical to the first one.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, List of Elementary episodes. HTML formatting and reference markers removed. · Content license