Result narrated by "Ellie Mars" in All categories

Iris Fenwick inherits a house she never expected to want. Newly widowed, she arrives in the fading lakeside town of Larkhaven to settle her great-aunt's estate—a Victorian house on Larkspur Hill, beautiful, neglected, and larger, somehow, than its own floor plan should allow. Cataloging its contents room by room, the way she's cataloged a hundred other estates before this one, Iris finds a door at the end of the upstairs hall that appears on no survey.

Liz Mercer knows how to read the Lake Michigan shoreline. She’s spent years learning what others miss. Stones. Patterns. Absences. When seasoned rockhunters begin turning up dead, each marked with a black opal, Liz is drawn into an investigation governed by a chilling set of rules. The killer is methodical. The doctrine is precise. And when arrests are made, the violence should end. It doesn’t. Messages continue to arrive. Observations. Warnings. Corrections that never tell Liz what to do, only when to wait. Each delay feels justified. Each pause feels responsible.