The Event returns in two weeks.

After months off the air and time spent by producers tweaking the series in hopes of a renewal, NBC will welcome this alien-based thriller back with a two-hour episode on March 7. What can fans expect from this return?

• Virginia Madsen will debut as Senator Catherine Lewis.
• Sam and Leila will find a new lead in their search for Samantha.
• Thomas unveils an attack.

Get an early look at what's on tap via this promo and pair of clips: