Never Split the Difference by Chris Voss

After a stint policing the rough streets of Kansas City, Missouri, Chris Voss joined the FBI, where his career as a kidnapping negotiator brought him face-to-face with bank robbers, gang leaders and terrorists. Never Split the Difference takes you inside his world of high-stakes negotiations, revealing the nine key principles that helped Voss and his colleagues succeed when it mattered the most - when people's lives were at stake.