EXCLUSIVE:Foundis continuing to deliver a strong audience forNBC.

The pilot episode has now been seen by more than 20M viewers, according to NBCUniversal.

Thats up quite significantly from the live+same-day audience of 3.8M for the first episode.

WGA West building in Hollywood

In the seven-day viewing window, new episodes are still growing their audience by about 60%.

NBCU is also touting it as the No.

1 broadcast drama in the 18-49 demographic.

Watch the entire clip above.

But unbeknownst to anyone, this everyday hero is hiding a chilling secret of her own.