The investigation into the horrific murder of two girls near Munich in the spring of 2011 has once again shown: in the end, a tiny trace of blood was enough to convict the children's uncle as the perpetrator. Modern crime fighting increasingly takes place in laboratories and specialized task forces. Physicists, chemists, acoustics experts, explosives specialists, and handwriting analysts are on the hunt for unknown offenders who unsettle the public with their brutal crimes. The forensic technicians of the LKA Bavaria do not wear uniforms or carry guns – their weapons are the most advanced devices and insights from a highly technical science. A mysterious series of letter bombs, insidious capital crimes disguised as suicides, and shocking series of rapes – for the first time, a book offers spectacular insights into the secret methods and working practices of modern crime investigation.