Exclusive Switched at Birth Finale Video: Kathryn's Tell-All Is Out -- But Who Leaked It?

It looks like Switched at Birth besties Kathryn and Renzo are dunzo.

The two bonded over tap shoes, and he even helped her get a book deal. But all that won’t stop Kathryn from accusing her new friend of leaking her manuscript, as you’ll see in the following exclusive video from Monday’s winter finale (ABC Family, 8/7c). READ MORE & WATCH VIDEO