Not very likely to come to the same standing positions of the best seasons of a 24 but it has the potential of becoming the next (The) Blacklist and gain a good following if it improves and sticks to landing as the season progresses. What makes really makes the series are the performances of Morena Baccarin and Ryan Michelle Bathe who are both excellent and their chemistry very intense and entertaining to watch on screen. What I believe would help the show going forward is managing tone, the premiere went one way - dark and serious, and in the other - a bit more tongue in cheek. The imbalance doesn't hurt the program, but it's there and could be handled better.
NBC has got to be careful with this one, they've dropped the ball on too many promising series to name.