There's a few posts now on reading books and which ones are best to learn about forensic psychology. Here is a recommended reading list composed by the University of Suffolk for one of its modules.
https://libguides.uos.ac.uk/psychology-readinglist/forensic-psychology
Great books!! The Bartol's are the eminence in forensic psychology, in my past 4 and the next class I'm to take, Bartol & Bartol are the writers. Their books are easy to understand and are written in neutral english. Highly recommended..!!