While pursuing a gangbanger, Burgess (Marina Squerciati) and Roman (Brian Geraghty) come across the body of an eight-year-old boy who was reported missing. Intelligence launches an investigation to find the killer and Antonio (Jon Seda) and Lindsay (Sophia Bush) question a prime suspect. Meanwhile, Burgess confides in Ruzek (Patrick John Flueger) about Roman's suspicious behavior and Bunny (guest star Markie Post) heads to the Ivory Tower with a statement that could be detrimental to Voight's (Jason Beghe) career. Also starring Jesse Lee Soffer, Elias Koteas, LaRoyce Hawkins and Amy Morton. Yuri Sardarov, Nick Gehlfuss, Samuel Hunt and Madison McLaughlin guest star.