When the town librarian is an avid mystery and true-crime reader, the local law enforcement must need a book-smart assistant like her, right?The restaurants, rentals and recreational facilities around Newfound Lake are full of runners trying to record a personal best. Supporters of the New Hampshire Marathon show up armed with crockpots of sauce for the Potluck Pasta Dinner, and Rebecca wouldn't miss it. She serves Friday night and volunteers at the water station during the race on Saturday. As the marathon leaders pass her table, Rebecca begins searching for a missing medalist.Where will the investigation start when the projected winner never crosses the finish line? Chief Kenny Towne struggles to keep up the pace and hits a wall - that's when Rebecca hits her stride.Without time for a cool down, will this be the mystery Rebecca and Kenny don't solve?