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 S

Agatha Oddlow has been a detective for as long as she can remember -- she's just been waiting for her first big case. And nothing gets bigger than saving the Ci

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

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 wea