Out of the Fog — Carolyn Nash

What if you're a suburban mom with a snarky sense of humor and a wild imagination prone to dreaming up disasters? What if you and your friends take your daughters for a camping trip, and while on a quick trip to the nearest country market you see a man being bullied and then beaten? What do you do? Back away quietly? Not if you're Molly Deacon, who, along with her Mittyesque imagination, has a temper not to be trifled with.

Stepping in to rescue Alan Cartwright has consequences far beyond what Molly could ever imagine, and she must find hidden reserves of strength to survive a terrifying chase through a foggy night.