The Escher Twist — Jane Langton

HOMER AND MARY KELLY GET LOST IN AN ESHER-LIKE LABYRINTH WHERE EVERY LINE, CURVE, AND ANGLE LEADS TO MURDER

Leonard Sheldrake is a huge fan of the famous conceptual artist M. C. Escher. When Leonard hears that the visionary artist's work is coming to a show in his hometown of Cambridge, Massachusetts, he is ecstatic; little does he know how the show will change his life forever.

Meeting a woman in a green coat, Frieda, who also is an Escher enthusiast, Leonard falls instantly in love. But just as quickly, Frieda disappears from the gallery without a trace, leaving Leonard with a swelling in his heart--and a warning that he wouldn't love her if he knew more about her.

Enter amateur sleuths Homer and Mary Kelly, who vow to help Leonard find Frieda. Investigating the identity of this enigmatic woman, they begin to peel away layers of a darker, more twisted mystery, creating an Escher-like labyrinth of its own.