Dan Jones visits the exact location of the bakery where it started, Suzannah Lipscomb reveals how Londoners tried to save their belongings, and Rob Bell investigates 17th-century building materials and the prevailing weather conditions.
Dan Jones follows the path of the fire on the worst day of its rampage as it swept through some of London's iconic buildings, Suzannah Lipscomb finds evidence in the archives of who was blamed and who escaped scot free.
Dan Jones reveals why Londoners were desperate to stop the fire reaching the Tower, Rob Bell looks at the bizarre 17-century methods of treating burns and Suzannah Lipscomb examines a controversial new theory about how many people died.