The latest Hennessey and Yellich mystery

When five corpses in various states of decomposition are found chained to the walls of a kitchen garden, Hennessey and Yellich quickly begin their investigation. The recently deceased owner of the house was housebound for the last twenty-five years, and so would have had no idea of the appalling crimes taking place yards away. At first, there doesn''t seem to be much to go on, the victims appear to have little in common, but Hennessey and Yellich know that the dead must hold the clues they need . . .