A Cold Dark Place (Emily Kenyon Series #1) in Bloomington, MN

In a secluded farm house in the Pacific Northwest, a family has been slaughtered—and a teenage son has disappeared.
Single mother and cop Emily Kenyon spearheads a dark hunt for a killer. But Emily's teenage daughter Jenna is one step ahead of her. Then another family is butchered, and another. As Emily fits the puzzle pieces together, she makes a chilling discovery: the killer is coming after her and her daughter...