The trailer teases the return of Laurel Lance, a Canary Cry and black siren. “That’s not our Laurel,” Oliver says in the trailer. “Finally, it’s about time someone figured it out,” responds Laurel .

In the final scene in the mid-season finale of "Arrow," Laurel Lance turned around to greet Oliver in the Arrowcave. Her appearance had fans of Black Canary reacting and hoping that there's a theory behind her appearance.

From the newly released trailer, it is obvious that the Laurel that viewers met in the Arrowcave isn't the Laurel they had known for four seasons.

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Arrow stars Stephen Amell as Oliver Queen, Katie Cassidy as Dinah “Laurel” Lance, David Ramsey as John Diggle, Willa Holland as Thea Queen, Emily Bett Rickards as Felicity Smoak, John Barrowman as Malcom Merlyn, with Paul Blackthorne as Detective Lance.

"Arrow" returns January 25, 2016.