Deadly Justice — D.S. Butler

Time to run. Time to hide. Time to die...A late summer heatwave seems to have triggered an unusually high number of suicides. As the dead bodies pile up, DS Jack Mackinnon and the rest of MIT realise things aren't as straightforward as they seem, and when similar letters are found at the scene of each 'suicide,' Mackinnon is convinced they are dealing with a serial killer. The killer believes the police aren't doing their job properly and is determined to deliver his own deadly justice.Deadly Justice is the fourth book in the DS Jack Mackinnon Series.The series order is as follows: 1) Deadly Obsession 2) Deadly Motive 3) Deadly Revenge 4) Deadly Justice 5) Deadly Ritual 5) Deadly Payback 7) Deadly Game