On Beauty and the Beast Season 3 Episode 13, Vincent and Cat come up with a plan, which could change everything, to take Liam down. After Liam continually tried to implicate Vincent on murder charges for Vincent's past crimes, Vincent comes up with the idea to come clean about what he really is to the agents involved in his case. Cat is not on board at first, but realizes they have no other choice.

At the hospital, Vincent reveals to the agents he's a beast and they come up with their own plan to take down Liam. Vincent fakes his own death to make Liam think he has won. It works and Liam kidnaps Cat and plans to kill her. In Liam's lair, Cat distracts him while Vincent sneaks in, goes beast mode on him and quickly kills Liam.

The friends get together to celebrate beating Liam and they come up with the idea that Vincent and Cat should just get married already. At first Vincent and Cat aren't sure about the idea of just getting married without any planning, but the friends eventually convince them it's the right idea. Tess gets ordained and officiates the wedding and they're all able to celebrate a new chapter in Vincent and Cat's life. 

Did you miss out on this exciting season finale? You're in luck! You can watch Beauty and the Beast online now via TV Fanatic to catch up on the entire season.