A STRING OF IDENTICAL MURDERS BECOMES PERSONAL WHEN VOIGHT’S FRIEND FALLS VICTIM TO THE GUNMAN – Intelligence begins to look into a string of murders where the victims have a dollar bill pinned to their chests. Thanks to some digging by Ruzek (Patrick Flueger), Voight (Jason Beghe) learns his friend was involved in some shady business dealings. Antonio (Jon Seda) and Halstead (Jesse Lee Soffer) follow-up on some leads that help focus in on the culprit and motives for the murders. Meanwhile, Burgess (Marina Squerciati) and Roman (Brian Geraghty) investigate a series of house break-ins and get some help from Desk Sgt. Platt (Amy Morton). Sophia Bush, Elias Koteas and LaRoyce Hawkins also star. Christian Stolte, Markie Post and Stella Maeve guest star.