See through liars, read suspicious traces, or even erase them and overpower any attacker – utilize the secret knowledge of law enforcement. The tips and tricks from investigators not only make our daily lives safer but also open up entirely unexpected applications: the crime scene cleaner explains how to remove every kind of dirt, the bounty hunter knows how to track down a first love, and the tax investigator reveals which tax cheats are sure to be noticed – and which are not. Finally, a book that combines the diverse fields of investigators – whether it's a SWAT commander, cyber cop, or forensic scientist. Professionals share their most thrilling cases and provide ultimate tricks for everyday life. This way, the police become your friend and helper in all situations.