Complete story — includes the ending
A bomb hidden inside a body explodes in the morgue, destroying the evidence for several crimes. Sherlock discerns which case was the target of the bombing. Despite the lack of a body, the victim is identified as Janet, a woman who made a small profit selling drugs. A secret camera in Janet's kitchen reveals Toby, one of her clients, was spying on her. Toby's journals are found to be full of descriptions of ways to kill Janet, but his alibi leads Sherlock to suspect his father of killing her to protect his son. When confronted with the possibility of Toby going to jail, his father confesses. Detective Cortes unexpectedly asks for Joan's help finding an elusive suspect. Joan is frustrated when Cortes refuses to explain her questionable rationale. Sherlock suspects that Joan is being framed for an assault. Cortes reveals that she committed the assault as an act of justice — the man she attacked had violently assaulted a girl, leaving her with permanent brain damage — and requests Joan's help in the future, noting that she and Sherlock have taken similar actions in the past. Joan instead threatens to expose her if she ever does it again.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, List of Elementary episodes. HTML formatting and reference markers removed. · Content license