Small-town reporter Callie Cooper thought her biggest problem was a lying ex-boyfriend and a struggling newspaper — until Margaret moved in. Beautiful, mysterious and harboring secrets that defy explanation, Margaret seems too good to be true.

She is.

When Callie discovers her roommate is a centuries-old being from another realm, their friendship becomes something far more dangerous: a soul-bond that grants Callie perfect memory and the ability to detect lies. But power this profound comes with a price, and Margaret’s possessive father, Alexander, will stop at nothing to sever their connection and drag his daughter home.

As domestic violence destroys Callie’s closest friend and corruption consumes her small town, Callie discovers her new abilities include a terrifying weapon — one that can shatter minds with a word. When she uses it for vengeance, Margaret realizes she may have bonded with someone as dangerous as the monsters they face.

Now, Alexander has found the perfect leverage: Mark, the man Callie loves. With 24 hours to convince Margaret to break their bond — a process that could kill Callie — she must choose between the power that’s made her whole and the people who make her human.

In a world where demons walk among us and the line between justice and vengeance blurs, the greatest threat isn’t the monsters hiding in plain sight — it’s becoming one yourself.

Callie thought the worst was behind her. After sharing her soul with Margaret — a demon who became her best friend — and surviving the chaos that followed, life finally seems to be looking up. She’s engaged to her soulmate Mark, her greatest enemy is safely locked away, and her newfound abilities as a Witness have opened doors she never imagined.

But Callie knows better than to trust calm waters. She’s seen how deep the world really runs.

When two strangers arrive in Las Vegas with their own hidden agenda, Callie’s instincts scream danger. Margaret, however, is captivated—especially by the enigmatic Sam, who awakens memories she thought were buried forever. As Margaret falls under his spell, Callie realizes these aren’t ordinary men. They’re players in a game far more dangerous than anything she’s faced before.

With Margaret’s judgment compromised and their bond hanging in the balance, Callie must navigate supernatural politics that could destroy everything they’ve built.

She knew helping Margaret would change her life forever. She just never imagined how far down the rabbit hole that choice would take her.

Callie Cooper Walker thought she’d found balance with the family she was building around herself and the supernatural threats finally behind her. But when both the angelic and demonic realms line up against her, Callie discovers some gifts come with a price that could shatter reality itself.

As energy bleeds through dimensional barriers, Callie’s abilities spiral beyond her control. Her perfect memory becomes a weapon that can rewrite history with a thought. Her voice can compel truth from anyone — whether she intends to or not. And with each passing day, the power growing within her threatens not just her sanity, but the lives of everyone she’s fought to protect.

When angels arrive claiming to offer salvation, their solution is as terrifying as the problem: eliminate the source before it destroys everything. But Callie refuses to choose between her family and the world’s survival. Instead, she’ll forge an impossible alliance with her greatest enemy and risk a plan that could either save reality — or become the very apocalypse the angels feared.

With her husband’s soul hanging in the balance and Margaret trapped between humanity and her demonic nature, Callie faces her ultimate test. In a world where good intentions pave the road to destruction and love itself can become a cosmic threat, she must learn that sometimes the only way to save everything is to let it all go.

The final chapter of the Joined World trilogy explores the weight of absolute power and the courage required to wield it — or surrender.