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.
As Mackinnon gets closer to the truth, he finds his own family could be at risk.
About the Author
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)