NBC has debuted a new extended promo for "Blindspot," the upcoming drama starring "Thor" actress Jaimie Alexander.

In the series, co-created by Greg Berlanti (“Arrow,” “The Flash”), Alexander the amnesiac “Jane Doe,” who’s discovered naked in Times Square, her body covered in intricate tattoos — one of which is the name of FBI Agent Kurt Weller. She and the FBI quickly realize each mark on her body is a crime to solve, leading them closer to the truth about her identity.

Premiering Sept. 21, “Blindspot” also stars Sullivan Stapleton and Audrey Esparza.