The Deepest Water by Kate Wilhelm
I actually listened to this one, an audiobook narrated by Marguerite Gavin. I've never read anything by Wilhelm before, although I 'm not quite sure how I missed her. She's been writing in a variety of genres since the 1960s, including mystery, science fiction and fantasy.
The story centers on Abby, whose father, author Jud Connors, was murdered at his secluded lakefront cabin. The detective in charge of the case seems to be making little progress, at least from Abby's point of view. Abby, against the wishes off her husband Brice, begins investigating the murder and her father's past, helped by Jud's lover and his closest friend, both strong intelligent women.
The female characters were the highlight of the book for me. Abby seems real, devastated by her father's murder, determined to find the killer, confused by what she discovers. Wilhelm hits a perfect note with the two older women also. They each have their own personalities,...