Days of Our Lives Mystery: Who Really Is Cat Green? Impostor, ISA Agent, or Villain Mastermind?

Greetings, Days of Our Lives devotees! It’s your friends at TV’s Drama Digest, and today we’re pulling back the curtain on one of Salem’s most tantalizing mysteries: Who is Cat Green, really?

Ever since her return to Salem, Cat has been at the center of emotional reunions, sinister twists, and cryptic conversations that seem to suggest she may not be who she appears to be. Is she truly the beloved daughter of the Green family? Or is she something more dangerous—an impostor, a spy, or even a secret villain with an agenda that could bring Salem to its knees?

Let’s dive into the layers of this unfolding enigma and explore the wildest, most compelling theories that are setting the Days fandom ablaze.

Theory #1: The Impostor—Plastic Surgery, Memory Implants, and a Global Mission

Picture it: a dimly lit operating room, the hum of machines, and a woman awakening from anesthesia with Cat Green’s face—but not her soul. According to this theory, the real Cat died—perhaps in an accident, or possibly taken out by one of Salem’s many shadowy enemies. Her death, instead of being mourned, became a secret.

Enter the ISA, Salem’s ever-present covert agency. What if they saw an opportunity in Cat’s death? With her unique position in the community and access to people like Clyde Weston, the ISA could have replaced her with a surgically-altered agent—someone who looks, talks, and walks like Cat but is actually a stranger.

Using advanced memory implants—something Days has played with before (hello, microchip Marlena)—this agent could pass as Cat almost flawlessly. She’d know the Green family’s deepest secrets, Clyde’s habits, and the town’s history. Her assignment? Take down Clyde Weston, who may be connected to a larger criminal empire far beyond Salem’s borders.

But while the mission might be noble, the method is deeply chilling. Is Cat truly Cat—or a masterful performance powered by espionage and deception?

Theory #2: The Recruit—The Real Cat, Pulled Into the ISA’s Web

A slightly less sci-fi but equally dramatic theory suggests that Cat wasn’t replaced—but recruited.

Perhaps she suffered a trauma, faced blackmail, or encountered a dark moment that led her into the arms of the ISA. Maybe they offered her protection, redemption, or a way to make a difference. In return, she became a reluctant operative, planted in Salem to monitor Clyde Weston and infiltrate his operations.

This version of Cat walks a dangerous tightrope. Her family thinks she’s back for good. Her enemies think she’s just a harmless Green girl. But in reality, every conversation, every smile, every tearful memory may be a calculated move in a spy game she never asked to join.

Her situation becomes even more precarious when her mother shoots Clyde, leaving him in a coma. Was this a crime of passion—or did it destroy months of Cat’s undercover work?

If Cat was indeed working with the ISA, her cover may now be compromised, and her mother may have unknowingly derailed a global operation.

Theory #3: The Villain—Cat as the Puppet Master in Disguise

But what if the truth is even darker?

What if Cat isn’t a victim, or a hero, or a spy—but a villain?

This theory hinges on a small but telling moment—when seasoned ISA agent Shane Donovan looked confused when Cat greeted him. Why didn’t he recognize her? If she were working with the ISA, shouldn’t she be in their files? What if Cat has been working against the ISA this whole time?

Under this theory, Cat is a master manipulator, a double agent—or worse, an independent force with her own sinister agenda. Her return to Salem wasn’t for family or closure, but to execute a long-brewing plan. Maybe she’s aligned with a rival organization, or maybe she’s using her Green family connections to control Salem from the inside out.

Could her interactions with Clyde Weston have been staged? Were they really adversaries—or secret partners using their public feud as cover? Did she orchestrate Clyde’s coma to tie up loose ends while preserving her image?

If this is true, then every interaction we’ve seen—from heartfelt reunions to confrontations with Salem’s biggest players—may have been a cold, calculated performance.

The Clyde Weston Factor: Pawn or Kingpin?

At the center of every theory lies Clyde Weston, the man Cat appears to be targeting. But is Clyde really the endgame?

Traditionally, Clyde has been a local menace—blackmail, drugs, murder. But not the kind of global threat the ISA usually bothers with. So why would the agency be interested now?

Unless… Clyde is part of something bigger. A front for an international cartel? A piece on the board of a global game of power? If so, Cat’s involvement—whether as spy or saboteur—takes on a whole new dimension.

Which Theory Fits the Current Days of Our Lives Style?

Over the past few years, Days of Our Lives has shifted its tone. Gone are the outlandish sci-fi storylines of memory chips and levitating villains. The writing has become more grounded, character-driven, and emotional.

This makes the plastic surgery/impostor angle less likely, though not impossible.

What fits better? The ISA recruit or hidden villain stories. Both offer rich emotional territory—loyalty, betrayal, and high-stakes secrets—without requiring the viewer to suspend belief beyond reason. Cat as a double agent or a deep-cover operative would feel fresh yet grounded in Days lore.

The Heart of the Mystery: The Green Family

No matter which theory proves true, it’s clear the Green family is central to Cat’s story.

If she’s an impostor, their trust is her weapon.
If she’s a recruit, their love is her weakness.
If she’s a villain, their legacy might be what she’s trying to destroy—or steal.

This family is the anchor around which her mystery spins. And that makes the stakes even higher. The emotional devastation if they discover she’s been lying—about her identity, her motives, or her loyalties—will be seismic.

What Happens When the Truth Comes Out?

The inevitable reveal will shake Salem:

• If Cat is an impostor, her exposure could lead to heartbreak, arrests, and possibly even death.

• If she’s an ISA operative, her cover might be blown, putting her and her family in danger.

• And if she’s a villain, her unmasking could ignite a town-wide war, turning friend against friend and ally against ally.

The fallout from any of these outcomes would ripple through the entire canvas of Days of Our Lives, giving fans the kind of drama we live for.

Final Thoughts: Hero, Pawn, or Mastermind?

So, who is Cat Green?

A grieving daughter with a dangerous mission?
An impostor walking in someone else’s shoes?
Or a dark force playing all sides from the shadows?

Whichever path the writers choose, one thing is certain: Salem will never be the same again.

What’s your theory, Days fans?
Is Cat hiding a secret that will redefine her character forever? Sound off in the comments, and stay tuned to TV’s Drama Digest for more deep dives into Salem’s biggest mysteries.

Would you like a follow-up article exploring Clyde Weston’s possible global connections or one that focuses on Shane Donovan and the ISA’s hidden agenda?