Lethal Prey

Doris Grandfelt, an accounting-firm employee, was stabbed to death and her body dumped in a park east of St. Paul, Minnesota, and her killer was never found. Years later, true-crime bloggers chasing new evidence draw Lucas Davenport and Virgil Flowers back into the cold case, and when one of them locates the murder weapon, the two investigators begin uncovering the killer's identity.