Discovered that the movie tie-in / novelization section is still intact at Montclair Book Center. My find for the day:
I like that the cover features completely different artwork than what was ultimately used to promote the film. The face appears to be based on William Hurt's features. I suspect this artwork was one of several designs that was intended to promote the film itself, but was bypassed in favor of this now-familiar campaign:
Now that I have the book in my hand, I notice the billing on the poster advising viewers to look out for the "Avon Paperback."