Stress gets the better of Kara when she pushes herself too far during a training exercise.
Kara struggles to juggle her two lives.
Kara and her boss come under threat from a volatile CatCo employee.
Supergirl’s powers are put to the test when Reactron show ups.
Kara’s attempts to help National City don’t go according to plan.
Melissa Benoist makes her debut as Supergirl.