With Arrow set to return next week for the second half of Season 2, The CW has released the synopsis for the 11th episode of this current season. The mid-season return is episode 10, Blast Radius, so this synopsis is for the episode following that, titled Blind Spot.
The official word reads:
“Oliver is conflicted after Laurel reaches out to the Arrow asking him to investigate Sebastian Blood (guest star Kevin Alejandro). Oliver is unsure whether to believe her accusations against the man he has publically supported for mayor, but decides to trust Laurel. However, when the pair gets too close to the truth, Sebastian exposes Laurel’s drug addiction and has her arrested. Meanwhile, Roy reveals his new super-strength to Sin (guest star Bex Taylor-Klaus) who wants to test out his abilities. Unfortunately, Roy isn’t able to contain his rage once unleashed and almost kills a man. Back on the island, Oliver is surprised when Sarah (guest star Caity Lotz) reveals a secret about Laurel.”
The episode is set to air on 22nd January in the US.