Professor Patricia Wiltshire is the author of The Nature of Life and Death. Wiltshire is a forensic ecologist, botanist, and palynologist, and also has a background in environmental archaeology. She has worked with every police force in the UK, and on many high profile cases. She regularly lectures at conferences and scientific meetings all over the world, and is active in research and publishing, as well as university teaching. Wiltshire is an experienced expert witness for both the prosecution and defense, and is a registered expert with The National Crime Agency. She is a fellow of the Chartered Society of Forensic Science, The Royal Society of Biology, and the Linnean Society.