Reviver, by Seth Patrick

The concept of this novel is that "revivers" can re-animate a recently dead corpse just long enough to let loved ones say goodbye, or in the case of a violent death, to learn the identity of one's murderer.   The hero, Jonah Miller, is a troubled, naive, somewhat damaged young man.

This isn't a great book, and I'm not going to strongly recommend it, but if the notion sounds appealing, I'd say it is worth a look.

The Reviver