Toxic: A History of Nerve Agents, From Nazi Germany to Putin's Russia

Dan Kaszeta lives in London, where he runs a specialist consulting firm. He has decades of experience in protecting against chemical and biological weapons, and has held positions in the US Army, the White House Military Office, the US Secret Service, and private industry.

Paul Heitsch has been narrating audiobooks since 2011, after having worked as a pianist, composer, recording engineer, producer, and sound designer for many years. His work is often cited for the authenticity he brings to the narrative and characters he portrays, as well as his versatility, and clear, smooth delivery.