The season premiere continues the apocalyptic events of last season as Trigon sets out to win the Titans over to his side by embracing their inner darkness.

As Kory’s memories come flooding back, she discovers her true mission, regarding Rachel. While Dick and Donna discover Kory’s alien origins, Rachel uses her powers to save Gar.

Dick takes a dark journey back to Gotham in the finale.

A popular young singer is found dead outside an infamous Las Vegas nightclub, leading the CSI team to uncover a link between that crime and a murder 50 years earlier.

The CSIs investigate a man’s claim that his wife fell down a set of stairs in their home.