Fitz Explains How Aida Got Her Inhuman Powers In Season 4 Finale Clip

05/12/2017 10:14 pm EDT

As we've seen in the previous two episodes of Agents of SHIELD, Aida isn't just human; she's also Inhuman, possessing at the very least teleportation, electrokinesis, and rapid healing abilities.

Her human form was created by the Darkhold, but Fitz -- in the Framework -- is to blame for her Inhuman powers. He explains to Simmons: "I devised a procedure which extracted dormant Inhuman DNA from subjects pre-Terrigenesis. Being more specific, he adds, "I performed lethal experiments on approximately two dozen people -- innocent people, people we've known from this world -- Lincoln Campbell, Vijay Nadeer, Gordon from the Afterlife..."

While he's still beating himself about what he did in the Framework, Simmons tries to get him to use that energy to help her find a way to kill Aida once and for all, but Fitz looks hesitant and Simmons isn't happy about it. Looking stressed, she asks, "Do you want to kill her?"

MORE: Agents Of SHIELD Actor Teases "Diabolical" Season 4 Finale / ABC Officially Renews Marvel's Agents Of SHIELD For Season 5 / Ghost Rider Returns To Agents Of SHIELD / Agents Of Shield Season 4 Episode 21: The Return Recap With Spoilers

GHOST RIDER RETURNS ON THE EXPLOSIVE SEASON FINALE – With the surprising emergence of Ghost Rider, Coulson and the team attempt to stop Aida from ending the world.

The show stars Clark Gregg as Agent Phil Coulson, Ming-Na Wen as Agent Melinda May, Chloe Bennet as Daisy Johnson, Iain De Caestecker as Agent Leo Fitz, Elizabeth Henstridge as Agent Jemma Simmons, Henry Simmons as Agent Alphonso "Mack" MacKenzie, and John Hannah as Holden Radcliffe.

The guest cast includes Natalia Cordova-Buckley as Elena "Yo-Yo" Rodriguez, Gabriel Luna as Robbie Reyes/Ghost Rider, Mallory Jansen as Aida, Adrian Pasdar as Brigadier General Glenn Talbot, Jordan Rivera as Hope Mackenzie, Patrick Cavanaugh as Burrows, Zach McGowan as The Superior, Joris Jarsky as Sergei, Zibby Allen as Lt. Evans, Joel Stoffer as silhouetted man, and Karole Foreman as waitress.

"World's End" was written by Jeffrey Bell and directed by Billy Gierhart.

Check out preview images in our gallery below!

The exciting season finale of Marvel's Agents of SHIELD will air Tuesday, May 16 at 10:00–11:00 p.m. EDT on The ABC Television Network.

Marvel's Agents of SHIELD was co-created by Joss Whedon (The Avengers, Buffy the Vampire Slayer), Jed Whedon & Maurissa Tancharoen (Dollhouse, Dr.Horrible's Sing-Along Blog), who also serve as executive producers along with Jeffrey Bell (Angel, Alias) and Jeph Loeb (Jessica Jones, Daredevil). Marvel's Agents of S.H.I.E.L.D. is produced by Marvel Television and ABC Studios.