EXCLUSIVE: 'Shadowhunters' Cast Reveals Major Spoiler About Season Finale -- Watch!

You're not gonna want to miss this.

Shadowhunters is about to get real.

ET's Leanne Aguilera talked to the show's cast at Comic-Con in San Diego, California, on Thursday, where they spilled details on the upcoming season finale (SPOILERS!), which is apparently could be the series finale for one character in particular.

EXCLUSIVE: Paul Wesley Dishes on Directing 'Shadowhunters' and His 'Vampire Diaries' Déjà Vu!

"Someone dies in the finale," star Katherine McNamara revealed.

That being said, the cast was very diligent about not giving up any other details, but this should certainly keep fans in anticipation for when the finale airs this August on Freeform.

Watch our Facebook Live interview below.

EXCLUSIVE: 'Shadowhunters' Star Katherine McNamara Dishes on Sarah Hyland Joining the Cast!

Meanwhile, McNamara recently spoke with ET to tease Sarah Hyland's appearance on the show.

Watch the video below for more!