It was just a quick line from Sandstorm agent Roman (Luke Mitchell) early on in Blindspot's second season — "Then activate our mole inside the FBI" — but it has been one of the series' biggest questions and has kept fans on edge. Who is the mole?

A baby shower and a Rashomon-style plot lead a fun hour

We have our guesses, and fans have certainly theorized about the double crosser. But what about the people in the know? We brought in Audrey Esparza, who plays FBI agent Tasha in the show, into the office to ask her who she thought the mole was, and she's just as curious as we all are.

Blindspot airs Wednesday nights at 8/7c on NBC.