Michael Fanone's memoir, Hold the Line, recounts his experiences as a Metropolitan Police Department officer during the January 6th Capitol riot, focusing on his personal account of the violence, injuries sustained, and subsequent struggles. The book also explores Fanone's career, from his early days as an officer to his undercover work, highlighting his interactions with various individuals and communities. Further, it examines the aftermath of the riot, including Fanone's testimony before the January 6th Committee and his reflections on police reform and the political polarization surrounding the event.