Marc Guggebheim did a new interview with Variety about the season final of Legends Of Tomorrow and he talked a little about Katie.
Variety: Katie Cassidy is returning for the finale as Laurel. How was it having her share scenes with Sara (Caity Lotz) again?
Marc Guggenheim: It’s always a delight to have Katie Cassidy come back and reprise her role as Laurel. It’s just one scene but it’s an incredibly pivotal scene, and I think it’s very moving.
Variety: I was excited to see Katie was returning as a series regular to “Arrow,” but I honestly had my fingers crossed that Black Siren would become a member of the Legends.
MG: That was something we had talked about. For us, the whole conversation about bringing Katie back as a series regular on “Arrow” began with her performance in the midseason premiere. We briefly spoke about bringing her on “Legends,” but I think from a story perspective we would get far more mileage out of her interacting with the cast of “Arrow.”