BEAUTY AND THE BEAST Season 3 Episode 10 Photos Patient X : CAT AND VINCENT ARE DETERMINED TO HUNT DOWN LIAM – When Cat (Kristin Kreuk) and Vincent (Jay Ryan) make it their mission to capture Liam (guest star Jason Gedrick), they find information about a Patient X that they might be able to use to help them find him. Meanwhile, JT (Austin Basis) and Tess (Nina Lisandrello) work to confirm that JT is serum free. Nicole Gale Anderson also stars. Norma Bailey directed the episode written by Benjamin Raab & Deric A. Hughes (#310). Original airdate 8/13/2015.