The first edition of the book was published in 2007 and the newly revised and updated second edition continues to be the only accessible introduction to forensic entomology for undergraduate students.   Forensic Entomology provides undergraduates with a concise introduction to the subject written with the clarity necessary for students starting out in entomology yet authoritative enough to prove useful for more experienced researchers. Worked examples of the necessary mathematics, including how to use excel to process data, coupled with lab protocols and self-assessment questions make the book an essential starting point in the subject. The book serves as  a practical guide to collecting entomological samples at the crime scene, skills for the processing of samples in the laboratory and presenting data for legal cases in both civil and criminal courts. A new pictorial key designed for the second edition gives extra aid in species identification. Including a new chapter covering aquatic insects. A new section is included to discuss the identification of traces of explosives found in larvae, puparia and pupae. DNA sampling from insects is now included. Revised coverage of PMI calculations, role of professional associations for forensic entomologists and sampling at the crime scene to provide even more comprehensive and accurate information.   Assuming little prior knowledge of either biology or entomology the book provides information on identification, life cycles and ecology of insects presented in a forensic context. Information is conveyed in an accessible style with practical tasks and suggestions for further reading included in each chapter.