Agatha’s been a detective for as long as she can remember. But can she crack the case in these three mysteries: The Secret Key, Murder at the Museum and The Silver Serpent?

Meet thirteen-year-old Agatha Oddly – a bold, determined heroine, and the star of a stylish new detective series.

A third mystery for thirteen-year-old Agatha Oddly – a bold, determined heroine, and the star of this stylish new detective series.

Tells of a celebrated seventh-century Chinese magistrate's investigation of a double murder among traveling merchants, the fatal poisoning of a bride on her wedding night, and a murder in a small town

Paperback reprint. Originally published: 2020.

In this revised and expanded edition, leading forensic scientist John Trestrail offers a pioneering survey of all that is known about the use of poison as a weapon in murder. Topics range from the use of poisons in history and literature to convicting the poisoner in court, and include a review of the different types of poisons, techniques for crime scene investigation, and the critical essentials of the forensic autopsy. The author updates what is currently known about poisoners in general and their victims. The Appendix has been updated to include the more commonly used poisons, as well as the use of antifreeze as a poison.