 When Lester Bryce-Jones is found hanging in his apartment, newly promoted DS Hazel Wallace isn t convinced that it is in fact a suicide. Her suspicions are aroused even more when she learns that his expensive lifestyle doesn t quite match his income as a hospital porter. Although Jack Frost submitted his resignation after the death of DS Clive Barnard, Supt. Mullett actually placed him on extended compassionate leave and now asks him to return to active duty. Frost takes charge of the case and soon finds a connection to two of his old cases. The first, the Appendix Man, involved an appendicitis patient who walked out of hospital before his surgery and was subsequently found drowned in the river. The other dated from seven years previously and was known as the Black Farm Murders where a local landowner was killed and his valuable paintings stolen. Realizing they are all related in some way, Jack has the opportunity to close the books on all three cases.