(S07E09) Previous Episode
Aired On 2018-12-10
With Oliver and Barry still stuck in the other’s bodies, the two get a lead on John Deegan and head to Gotham City with Supergirl to figure out why their reality has changed. While there, they meet the mysterious Kate Kane who provides them with information that leads the group to Arkham Asylum. The crossover starts on The Flash S05E09 Elseworlds (I) and concludes on Supergirl S04E09 Elseworlds (III).
Next Episode (S07E010)
Airs On 2019-01-21
Oliver is ready to get back to work with the SCPD and to focus on his marriage with Felicity. However, when Dinah tasks Oliver with tracking the new Green Arrow things take a surprising turn. Meanwhile, Diggle and Lyla must answer to ARGUS about Diaz.