An anonymous tip to the LAPD sparks an unusual multiple-victim kidnapping investigation, forcing the team to rely on board games and puzzles to track down their suspect.

The FBI joins the investigation into the murder of a controversial tech magnate, forcing Karadec to reunite with his former partner. Meanwhile, Ludo becomes overwhelmed with his increasing childcare duties.

Soto reopens an old murder case in the famous Donovan family, determined to uncover the true killer in classic “whodunit” style.

A nanny is found bludgeoned to death in the park. Elsewhere, Morgan interferes when Elliot admits to not being invited to his classmate’s party.

The team investigates a mysterious young girl who was found attacked on a beach. Meanwhile, Morgan begins to let her guard down on her date with Tom, and Soto comes one step closer to finding out what happened to Roman.