Complete story — includes the ending
Researcher Barry Granger has been testing the "Hound", a breathalyzer for detecting cancer. He is eventually murdered. His research was alleged as fraud by an expert in the field under the pseudonym Adam Peer. The allegation looks set to ruin both Granger and the firm that employed him, a company run by Hank Prince. The allegation is actually false, and Peer was two people: Granger and another, but Prince hacked their email to make the fraud allegations against Granger. Prince later murders his wife. Earlier he had tried to trash his firm's value by masquerading as Peer and impugning Granger, so that she would receive in their divorce only some of the company's depressed value, which would then rebound once Granger's research was vindicated. Bell, recovered from his injury and returned to field duty, asks Joan to find a missing witness to a street killing. She changed her mind about testifying after she became pregnant and is hiding with a former tutor, Manny Rose. Bell tells Rose to tell the witness that her testifying does not matter as they will get the perpetrator next time. The killer and Rose are later found shot to death - Rose decided to dispense his own vigilante justice.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, List of Elementary episodes. HTML formatting and reference markers removed. · Content license