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.

Cat and Vincent take Agent Knox's offer to extricate and try to lead normal lives -- but forces out of their control conspire to expose them and drag them back into the fray.

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.

Cat finds information in a surprising place -- her ancestor's journal -- that makes her think the only way to stop Gabe is to kill Vincent.