Justine Musk is the author of BloodAngel, published in 2005 by the ROC imprint of Penguin Books. BloodAngel is a contemporary fantasy novel, similar to works by Dean Koontz or Stephen King. However, since the protagonist is empowered, rather than running scared from an unseen monster, the book is closer in feel to a sophisticated version of Buffy the Vampire Slayer than classic horror.

Justine lives in Bel-Air, California, with her entrepreneur husband Elon Musk (founder of PayPal and SpaceX), five boys, and three dogs.