Ian Casselberry

Kara and Alex find an alien fight club run by Roulette while investigating the murder of an unregistered alien, Hank tries to get to know M'Gann better, and Supergirl begins to train Mon-El.

Upton brings back an old undercover identity to help take down a meth ring spearheaded by a former contact. Meanwhile, with pressure from Woods mounting, Voight calls in a favour for Olinksy.

Davis concocts a remedy for the blues; Annie makes a decision; Antoine becomes LaDonna's unexpected benefactor; Colson warns Albert to avoid trouble; Creighton is inspired by a classic novel.