Mountain City Murder — Marty Donnellan

It's 1978, before cell phones and personal computers. Entrepreneur, roller skating teacher, spy thriller author, and amateur detective Hannah Scrabble overhears a snippet of conversation in the park. What she hears sets her and her longsuffering suitor, Melvin Pearl, on the trail of a ruthless killer. To her surprise, their search points to an unsolved mystery from Hannah's own past. Hannah will do just about anything to solve a mystery. If only she could discover who holds the key to her heart.