From publisher blurb:
Trapped in Bone and Flesh reveals the ghastly details about those accursed undead who can still remember the lives they once lived. Usually found in the service of necromancers, death lords, and other foul practitioners of the dark arts, these vile minions vent all their hatred against the living. As has been done with other creatures in the Monstrous Pages series, this supplement scrutinizes and expands on boneguards and grave thralls, while presenting an additional menagerie of other dark and grotesque undead to help Game Masters populate tombs, lairs, and other places of horror with truly terrible foes. Armed with these pages, you will have everything they need to vex your players and drive their characters to the brink of madness.