Parasite Lost
Supergirl Season 4



Critic Ratings: 10
Critics Consensus

Buoyed by the mesmerizing, terrifying transformation of Agent Liberty, "Parasite Lost" covers a lot of ground without losing sight of the season's overarching theme.

Episode Info

Colonel Haley makes a surprising decision regarding Supergirl. Kara writes s series of articles highlighting aliens in National City in the hopes that humans will stop being so fearful of them. Unfortunately, the article puts some of the aliens in harm's way.


Melissa Benoist
as Kara Danvers/Supergirl
Mehcad Brooks
as James Olsen
Chyler Leigh
as Alex Danvers
Jeremy Jordan
as Winslow "Winn" Schott
Calista Flockhart
as Cat Grant
David Harewood
as Hank Henshaw/J'onn J'onzz
Floriana Lima
as Maggie Sawyer
Katie McGrath
as Lena Luthor
Show More Cast

Parasite Lost Videos

Parasite Lost Photos

Critic Reviews for Parasite Lost

Parasite Lost" somehow has way too much going on, yet also a lot of time to fill. It's not a bad episode, per se, but it is a bit of a weird one.

Nov 12, 2018 | Rating: B | Full Review…

The transformation is stunning, and Sam Witwer is killing it as one of the scariest CW superhero villains in a long, long time. He's glib and golden and furiously angry, and it's hypnotic to watch.

Nov 12, 2018 | Rating: A- | Full Review…

The episode does an excellent job of pulling together various plots in a way that feels cohesive and moves the overarching story forward.

Nov 13, 2018 | Rating: 4/5 | Full Review…

Nia Nal has been a joy to watch. Nia adds an earnestness to the series that it lost for a brief time...

Nov 12, 2018 | Full Review…

I felt like I was actually watching Supergirl again, the one I've always loved.

Nov 12, 2018 | Rating: 5/5 | Full Review…

Though there are enjoyable moments sprinkled throughout Supergirl Season 4, overall, I'm just not connecting with the main storyline.There were even moments where I started zoning out.

Nov 12, 2018 | Rating: 2.6/5 | Full Review…

Normally, a plot about Kara doing journalism would make me nervous; as I've noted probably too many times, Supergirl's portrayal of the media plays rather fast and loose with reality.

Nov 12, 2018 | Full Review…

J'onn made his first steps towards becoming an alien detective.

Nov 12, 2018 | Full Review…

Frankly, I think she went too far by ending her celebratory brunch with a toast "to health, happiness and basking in the sunshine." On a TV show, that's straight-up tempting fate.

Nov 12, 2018 | Full Review…

Ironically, Supergirl more successfully sidelined its hero this week than last, when she was in a full-body suit and was physically on the brink of death.

Nov 12, 2018 | Rating: 3/5 | Full Review…