She's wanted to become a writer since she was six.[2] Mackenzie has been interested in politics since she was thirteen years old.[3] She likes cowboys and classic sci-fi.[4]
She wrote a young adult novel for Paper Lantern Lit, a literary development company, called Eternal Night, about gods living in plain sight of humans and then disappearing, bringing chaos onto the world.[5] It was published in August 2014.[6]
Background
Mackenzie notes being frustrated in 2012, wanting to write a novel, but feeling that every publishing house, literary agent, and packaging company she spoke to about that topic was only interested in something like the 50 Shades series, which she personally wasn't interested in writing. An author friend; Rebecca Serle, whom she knew through her work as a television critic, recommended she approach PaperLantern Lit. She submitted a sample of her current work in progress, which led to the eventual creation of Eternal Night.[7]
Roswell, New Mexico
Mackenzie created the show, a reboot of the original Roswell series that launched in 1999 and also included novels.[3]
In July 2020, it was announced she would no longer be serving as executive producer and co-showrunner starting the third season of the series.[8][9]
We Were Liars
In January 2023, it was announced that Mackenzie will write the second episode of the new TV Series ordered by Amazon[10] based on the young adult contemporary novel We Were Liars, an amnesia thriller set on a private island close to Massachusetts, written by E. Lockhart. Mackenzie will also be serving as executive producer along Julie Plec, Emily Cummins, and E. Lockhart.[11]