Matthias Schranner worked a number of years for the police as a negotiator in hostage takings and bank robberies. In his speech he describes successfully proven negotiation techniques. He describes how to thoroughly analyse our negotiation partner and their motives; to interpret group processes and their benefit; how to keep a cool head in difficult situations, and how to competently apply negotiation psychology.
He uses lots of practical examples, from e.g. salary, contract and sales negotiations. The numerous examples from his time with the police are entertaining, and make his speech enthralling like a detective story.