Supergirl has spent the last three episodes focusing on a Supergirl-worshipping cult, Morgan Edge (Adrian Pasdar) trying to frame Lena Luthor (Katie McGrath) for poisoning children, Maggie (Floriana Lima) and Alex (Chyler Leigh) breaking up, and a trip home for Alex and Kara (Melissa Benoist). And while all of this has been going on, M'yrnn J'onzz (Carl Lumbly) has been quietly getting acclimated to being on Earth.
Tonight's episode is called 'Wake Up' and features two characters found in a ship under the water outside of National City. It also includes a look into Sam's (Odette Annable) childhood. But in the clip below, we see that the title might also be a reference to J'onn J'onzz (David Harewood) having to realize what his life really is and how much of it is based around the DEO. We get to see the Earth through Lumbly's eyes as the new alien to the planet, as well as how Harewood takes it all for granted and is so focused on work. Sometimes we don't 'wake up' and see what's missing in our lives until we're showing it off to someone else.
Lumbly is a great bit of legacy casting for the series as the actor voiced J'onn J'onzz, the Martian Manhunter for the Justice League animated series.
Supergirl airs tonight at 8 p.m. ET on the CW.