Jack Butler

A guilty secret. A gruesome murder. A DEADLY MOTIVE.
A man is found poisoned by the deadly toxin aconite. A note found at the scene leads Detective Sergeant Jack Mackinnon to a University of Oxford laboratory, where staff and students are desperate to hide their association with the victim. After an arrest is made, his colleagues believe the case is all but closed... but Mackinnon’s nightmare is only just beginning.
Deadly Motive is the second book in the Detective Jack Mackinnon crime series.

D. S. Butler is the author of the DS Jack Mackinnon series of crime mystery books set in London. To learn more, you can visit D. S. Butler’s website. www.dsbutlerbooks.com For readers who like to read series books in order: 1.) Deadly Obsession 2.) Deadly Motive 3.) Deadly Revenge 4.) Deadly Justice 5.) Deadly Ritual (coming soon)