When you watch Beauty and the Beast Season 3 Episode 10 online you'll see it won't be a walk in the park to take down a character such as Liam. Cat and Vincent are determined to track down Liam, but Cat wants to do it like a police case while Vincent wants to track him down using his beast sense. The couple comes to an agreement to let Vincent try out his beast tracking. Vincent is able to track down Liam to the hospital Alton is at, but is too late as Liam has set off a bomb killing Alton and other patients. The revelation that Liam is still going after those that have the serum is their blood makes Tess take drastic steps to ensure JT's safety and she brings him to a safe house. Cat does some digging into Julianna's files and finds a Patient X who turns out to be her brother Russell. Russell is starting to have side effects to the serum and it's slowly killing him, but he's able to provide details about Julianna's case. He informs Cat Julianna was tricked into injecting Liam with the serum and never intended for any of this to happen. Cat takes Russell to the station after finding out his life is also in jeopardy. At the station, Russell has a meltdown, takes Cat's gun and wants to set up a trap to catch Liam by using himself as bait. Russell goes to where JT and Tess are at with Liam hot on his trail. Cat and Vincent show up just as Liam kills Russell and goes after JT. Vincent gets into a fight with Liam and it's revealed Liam is an enhanced beast which will make him even harder to kill. In the end, Liam gets away before Vincent can do anything to do and JT is having the same symptoms as Russell which makes him believe the serum is killing him. Don't feel bad if you missed out. You can watch Beauty and the Beast online now via TV Fanatic and catch up on the entire season.