Warm Bodies is a post-apocalyptic fiction and paranormal romance novel, written by Isaac Marion. ... M is R's best friend, "he is hundreds of pounds of muscle and fat draped onto a six-foot-five frame. ... As the book lingers on, R becomes more and more human like in the luminosity of Julie's presence. ... This element of the book was not effective in rendering R and Perry Kelvin's thoughts as an entirety. ... The themes set the raw perception of the novel that engages the reader to prevent from wanting to put the book down....