The episode, which sees Supergirl juggling personal, professional and superheroic duties while a mad bomber is on the loose in National City, features Jenna Dewan Tatum as Lucy Lane.
You can check out the clip below.
It's interesting to note that Carter Grant, Cat's son, is such a big fan of Supergirl. In the comics, Cat's son Adam was actually scared of Superman for a long time, and never entirely warmed up to the hero.
Supergirl airs on Monday nights at 8 p.m. on CBS.