Company of Strangers book 3, with spoilers for the earlier ones.
A tale of necromancy. Starting with their searching a house on behalf of a dead woman's family, finding necromantic remains and a phantasm, and carefully concealing them, taking what will help them in their quest for Alaric's rite.
With what they find, they search for those she worked with, in hopes of diAscovering more. It involves portraits of people with their eyes closed, libraries, a very ill-advises means of finding one of their group, secrets, being given an amulet by a priest they lied to, searching for a traveler, a man breaking his neck falling from a horse, and more.