The Drowning Season. Harrow Lake, #1

Eighteen years ago, Nora Ellery left the reservoir town of Harrow the summer her little sister walked into the lake and never came back up. She swore she would never go home. Now her grandmother is dead, ruled a suicide no one believes, and Nora returns to bury her, sell the house, and leave for good. But the lake is wrong. A long drought has dropped the water to a record low, and for the first time in sixty years the drowned steeple of old Coldharbor is breaking the surface.
Vera Ellery's journal tells a story Nora does not want to read: that the town was flooded on purpose, to keep something down, that the old families kept a quiet rite to hold the line, and that the rite has lapsed, and the water is still falling. Then the drownings begin. A girl walks smiling into the shallows in broad daylight. A man is found drowned in his locked, bone-dry truck. Wet footprints cross a locked house and do not dry.
And out across the black water, in a voice Nora has not heard in eighteen years, something wearing her sister's face is calling her home. The keeping needs a keeper of Ellery blood, and Nora is the last one. To put back under what the falling water has woken, she will have to go down to the shore, face the thing that wears Lena, and pay a cost she has spent her whole life refusing to name. Some towns bury their dead.
Harrow drowned them. And the water is still falling. An atmospheric, slow-burn supernatural horror, first in the Harrow Lake series.