Vincent kidnaps Cat as she tries to learn more about his mission; J.T., Tess and Gabe work together to help Cat.

Cat uncovers more of her past than she anticipated at her high school reunion; Vincent reunites with a military friend who has a dangerous secret.

In an attempt to find out who Vincent's handler is, Cat enlists in the help of her father and invites Vincent to Thanksgiving dinner, which ends in disaster.

In order to prevent Vincent from further injuries, Cat helps protect Tori when her life is threatened, revealing a new, unexpected mystery. Meanwhile, Vincent's stubborn attempt to intervene leads to life-changing consequences, which causes Gabe and Cat to grow closer.

Feeling pulled between her current boyfriend and her ex, Cat has to decide between Gabe and Vincent. While Cat and Vincent work together to save Sam’s latest victim, Cat’s decision gets complicated when she and Vincent find themselves in a compromising situation.

A city-wide manhunt for Vincent forces him and Cat to stay under the radar; Vincent and Cat find a surprising ally when the FBI asks them for help with an important case.

Desperate to start over with Cat, Gabe tries to woo her by taking her on a romantic date. However, she has plans of her own regarding how to save Vincent – while also trying to plan Heather's bachelorette party.

Vincent considers popping the question. The timing may not be right, however, when Cat stumbles upon an unusual case involving a superhuman rampage. In other events, Tess believes JT—who doesn't understand how he's still alive—has a mental block to recovery.