As the 10th anniversary of the Black Saturday fires approaches and the nation braces for another devastating bushfire season, we examine the fatal Churchill blaze and the investigation that led police to the enigmatic arsonist, Brendan Sokaluk. The story retraces Sokaluk's footsteps on the day and delves into his past to look for clues to why he lit a fire on a day of extreme fire conditions. His actions led to the death of 11 people and the widespread destruction of property, wildlife and bushland. Featuring never-before-seen police interview footage of Sokaluk, The Burning Question asks what we can learn from the events of that day and how we can use this case to identify potential arsonists in the future.