The Long Way Home, By Louise Penny

This novel finds Inspector Gamache happily retired and living in Three Pines.  The mystery that finds him is very different than what he is accustomed; there is no murder.  Several books ago, the village's artist, Clara Morrow realized that her husband Peter had been lying about some very important things for all of their relationship.  She made him leave but with the proviso that they should come back together after one year to reassess, and after that one year she expected him to come home.  But he didn't, nor did he make any effort to contact her.  At first she was angry, but then she began to worry and tracking him became  the Inspector's mission.  Together with Clara, Jean Guy
Beauvoir, and Myrna Landers (the local retired psychiatrist) they journey further and further into Quebec to find the missing man. 
 Despite the marked difference in this book's format, it is another worthy accomplishment for Ms. Penny.  Each character has some quest they need to complete and the journey for Peter provides the opportunity.

400 pages