Season 2: Cat and Mouse

Tess comes in the diner and joins JT and Vincent. She tells
Vincent that Catherine is missing. They need Vincent to track down Catherine
with his beast senses. Vincent is upset and wants to go find her. He
miraculously manages to keep the Beast in check long enough to realize that he
can’t just waltz into Cat’s apartment
because the police are staking the place. So, they devise a plan.

Side note:

VINCENT:Okay. When
was the last time that she was seen?

Probably at… her apartment… with you.

Did JT forgot that Catherine went to tell him that Vincent was gone? So the
last time that she was seen was at JT’s. Just my two cents.