[s2e2] Solve For X | 2026 Edition |

: A mathematician is found dead, and Sherlock discovers high-guarded, mysterious equations written in hidden ink on his walls.

In of the TV series Elementary , titled " Solve for X ," Sherlock Holmes and Joan Watson investigate the murder of a well-respected mathematician. The investigation leads them to discover that the victim was working on the P vs NP problem , one of the most famous unsolved problems in computer science and mathematics. Episode Overview [S2E2] Solve for X

: Holmes and Watson must identify the victim's unknown partner and determine if the motive for the murder was to steal or suppress the groundbreaking solution. Where to Watch : A mathematician is found dead, and Sherlock

: The plot centers on the discovery that someone may have actually solved the P vs NP problem , a breakthrough with massive real-world implications. Episode Overview : Holmes and Watson must identify