'Supergirl' Season 5 Episode 7 traces Leviathan's existence to even before Kara donned the suit and became National City's hero

This review contains spoilers for ‘Supergirl’ Season 5 Episode 7: ‘Confidence Women’

If six episodes of ‘Supergirl’ dished out bits and pieces of information about Leviathan, ‘Confidence Women’ dropped a massive shocker in revealing that the mysterious organization has been in existence even before Kara Danvers (Melissa Benoist) came into National City. 

While the storyline is largely about Lena Luthor (Katie McGrath) and Andrea Rojas (Julie Gonzalo) reliving their tumultuous past, the Leviathan angle comes in when Rojas uses the medallion of Acrata as instructed by unidentified persons. The final minutes of the episode sees Lena take the medallion away from Andrea and when she runs tests on it, the translation links to Leviathan, giving the first hint that the organization dated back a long way. 

For team Supergirl, this is just the beginning and over the course of the series, it is evident that Leviathan is the massive, omniscient threat the Girl of Steel will face. And there hasn’t been a whiff of ‘Crisis on Infinite Earths’. At the moment, it is still unclear whether Acrata (Andrea) will side with the Kara and Co., but with the medallion essentially gone, it remains how the plot for Andrea will be charted going ahead. 

Not much is known about Leviathan other than that they seem to have agents hiding in plain sight. The finale revealed that Eve Teschmacher (Andrea Brooks) was secretly working for the organization. She meets an old lady who tells her she failed her mission before revealing “Leviathan is everywhere. Leviathan is everyone. And Leviathan is coming.”

Right now, Leviathan is a pretty prominent name in DC comics thanks to Brian Michael Bendis and Alex Maleev's 'Event Leviathan' limited series. Though the organization was first formed by Batman's enemy and occasional lover Talia al Ghul, during 'Event Leviathan' she loses control to a mysterious new figure whose identity is still unknown.

At the moment, the Arrowverse is keeping details about the Leviathan close to its chest. Only time will tell what the organization is and how it impacts the plotline for ‘Supergirl’.

‘Supergirl’ airs Sundays 9pm on The CW.