Mindhunter

Former FBI agent and criminal profiler wrote this book about how he got involved in profiling from its inception, pursuing serial killers and how it make an impact in his life at a professional and personal level. If you have watch the Netflix series, you might see some of the scenes in the series in this book although of course with some changes.
But we can't forget that Douglas was not alone. Robert Ressler deserves credit as a great profiler as well and a pioneer with Douglas in criminal profiling.