The first instalment of BBC One’s Gunpowder, a three-part retelling of the infamous 1605 Catholic plot to blow up the House of Lords, and, in the process, King James I, was suitably thrilling. As a bonus, it even featured an angry Jon Snow (sorry, Kit Harington) as chief schemer Robert Catesby. (His co-conspirator Guy Fawkes is the name most remembered today, but it was Catesby who was the real brains of the operation.) But just how much of that gruesome first episode really happened? Here’s a quick round up of some of the key questions you might have after watching.