Open Library
Mystery
Every answer hides another question.

Guardian angel
Sara Paretsky

R is for Ricochet (Kinsey Millhone, #18)
Sue Grafton
Mistborn
Brandon Sanderson
The Housemaid Is Watching
Freida McFadden
Blood junction
Caroline Carver
The Green Toenails Gang (Olivia Sharp; Nate the Great's Cousin)
Marjorie Weinman Sharmat
You don't own me
Mary Higgins Clark
Love Me
Willow Winters
The Clue of the Screeching Owl
Leslie McFarlane
The case of the missing marquess [graphic novel]
Serena Blasco
The Bottoms
Joe R. Lansdale
The Man from Barbarossa
John Gardner
Enough Rope
Lawrence Block
Long Time Coming
Robert Goddard
The Dark Room
Minette Walters
Secondhand smoke
Karen E. Olson
Rosa
Jonathan Rabb
Some Days You Get the Bear
Lawrence Block
Name withheld
J. A. Jance
Wish you were here
Rita Mae Brown