I hereby extend my heartfelt thanks to Dr. Paul Smith. Paul has been my mentor and guide in my studies at the Institute of Criminal Justice Studies (ICJS) at the University of Portsmouth in Portsmouth, UK, where a previous version of this book was submitted as a Master Thesis in the study path Master of Science in Crime Science, Investigation and Intelligence. Thank you also for helping with the image processing of the gelatine lifters. It was a real pleasure to be part of this broader research project on wildlife crime at your institute. Further, I would like to express my thanks to Blanchie, Lolo and Ecee for their interest in crime investigation, investigative methods and wildlife crime combat. For her unbroken enthusiasm to format and edit this book, I would like to thank my friend and colleague Elisabeth Vanderheiden. Finally, I would kindly like to thank Judith Newlin, my editor in criminology at Springer. I thank you for the guidance and support.