After the First 48 S01 E04 Silenced/Downstream Drifter

In San Antonio, TX, Det. Tim Angell and his partners find a nameless man beaten to death floating in a creek. They must race to identify the victim and find anyone who may have known him. And in Phoenix, Det. Mike Polk and his team painstakingly reconstruct the final hours of a man found dead hogtied in a hotel room.