This week's DC Nation Podcast is dedicated to the most recent episode of The Flash where a fallen hero (Black Canary) returns as a super-villain (Black Siren) and a tragedy strikes the team in a horrific way. But that's not all as we review the season finale of DC's Legends of Tomorrow, as well as the most recent episodes of Arrow and Gotham. Plus, news discussion on the upcoming DCTV mega-crossover, Geoff Johns' new Fiege-type role for DC Films, and the announcement of a Harley Quinn spin-off movie. All this and more on this week's DC Nation Podcast!

DC Nation News Headlines:

Warner Bros Puts Geoff Johns in Charge of DC Films

The CW announces four-way crossover with Arrow, The Flash, Legends of Tomorrow, Supergirl

A Harley Quinn Spin-off Film is on the Way

TV Shows Reviewed on this Week's DC Nation Podcast:

Gotham: Wrath of the Villains S02E21 "A Legion of Horribles"

The Flash: S02E22 "Invincible"

Arrow: S04E22 "Lost in the Flood"

DC's Legends of Tomorrow: S01E16 "Legendary"