Cross Bones. (Temperance Brennan 8), Paperback/Kathy Reichs

A full week after death, a barely recognisable body is discovered in a closet. 'Death by self-inflicted gunshot wound to the head' is the initial assessment, but the victim's relatives are adamant that this was not suicide. Extreme heat has accelerated decomposition, and Dr Temperance Brennan's forensic expertise is required.