Supergirl: Season 3 is a solid year for the Girl of Steel and features a fine performance from star Melissa Benoist who absolutely owns the role. The writing, however, still is weak though some of the actual storylines were decent and had some cool villains.
Supergirl: The Complete Second Season is quite entertaining in spite of its faults with the script writing and some performances, yet Melissa Benoist is a delight in the lead, almost Christopher Reeve-esque in her cheerfulness, and the season-long arcs were compelling.
“Supergirl”: The Complete First Season has its issues, especially early on, yet as the season wore on, the writing got better, particularly the dialogue. But from beginning to end, the casting was pitch perfect starting with Melissa Benoist who is both beautiful and charismatic to pull off a character like Supergirl/Kara.