The Day the Music Died (S01E09)

Upon discovering that Colton was not cheating on her, Kat becomes resolute in uncovering the real story behind his accident and putting to rest the speculation that it was intentional. When she reveals to Del that Colton remained loyal, it shifts Del’s perspective on their past. Meanwhile, despite Elliot and Alice's attempts to talk her out of it, Kat is determined to travel back to 2000 to alter the tragic events that unfolded.