Artist Mike Hawthorne has been teasing a "game changer" book he's doing for Vertigo on his blog for some time now, and in an interview with the local paper in Lancaster, Penn. about this Saturday's Free Comic Book Day, he let a few details slip.

The project he's been teasing is a 130-page graphic novel called St. Michael's Promise. "It's essentially a memoir of his mother's journey from her native Puerto Rico to New York City, Lancaster and eventually York, where Hawthorne lives," the paper reports.

Hawthorne, who is also working with Roy Thomas on Conan the Cimmerian, will be at The Comic Store in Lancaster on Saturday.