The Lainey Maynard Mystery Series! Join the lovable, coffee-spilling, female sleuth, Lainey Maynard, as she and her group of quirky cohorts get knee-deep into danger... and murder! The Lainey Maynard Mystery Series is a cozy mystery series set in Minnesota. Author Laura Hern's newest release, The Family Tree Murders is the first book in The Lainey Maynard Murder Mystery series and will be coming in the Fall of 2019.