CW TV network has recently released an extended trailer of its series 'Arrow' Season 5 episode 10 entitled "Who Are You?" The trailer suggests Laurel Lance's reappearance. It teases scences of Laurel shown in the bunker telling Oliver she was saved while Oliver wonders if what he's seeing is real.

The trailer has fans speculating that it will be an action-packed episode with huge twists especially that a past character has reappeared. It will also create big questions surrounding Laurel's real motive and plans of suddenly reappearing in the series, Comic Book reported.

Reports added that the trailer may lead fans to believe what is not about to happen in the series, iDigital Times reported. Huge surprises are looming in Episode 10 now that Laurel has reappeared and broke out of Star Labs jail with the help of Prometheus. Many believe that Episode 10 will be the best action in the show's five-year run.

With Laurel's reappearance various options can be projected from the trailer. It may be that with Laurel broke out of Star Labs jail, with the help of Prometheus hoped to go undercover to get information on Ollie's plans. Then she might have a change of heart and decides to turn good and become a part of Team Arrow and take the name Black Canary to fulfill Laurel's legacy.

Sources also added that the next option would be Laurel just making up the whole story about White Canary saving her with the Waverider. Oliver and the team figure it out, and defeat her. The last theory would be Earth-1 Laurel and Earth-2 Laurel are both alive.

Fans will have the final judgment about these complicated plotlines when "Arrow" returns on Jan. 25. They are hoping that it will be as good as the trailer has projected Episode 10 to be.