"Submerged" -- When a series of backyard pool homicides are reported in California, the BAU team team searches for an UnSub with a puzzling past, on CRIMINAL MINDS, Wednesday, Jan. 3 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Lou Diamond Phillips guest stars as Sheriff Clifford. Pictured: Daniel Henney (Matt Simmons) Photo: Best Screen Grab Available ÃÂ©2017 CBS Broadcasting, Inc. All Rights Reserved | Episode 13.10 - Submerged | Promotional Episode Photos | Season 13 | criminal-minds | Gallery