A.J. Devlin is a Vancouver-raised crime and mystery novelist. He spent six years in Southern California, where he earned a Bachelor of Fine Arts in Screenwriting from Chapman University and a Master of Fine Arts in Screenwriting from The American Film Institute. He worked as a screenwriter in Hollywood. He has since moved back to British Columbia and now lives in Port Moody with his wife and two children.

His debut novel Cobra Clutch was released in 2018. It is the first in a series entitled A "Hammerhead" Jed Mystery.