Saturday (2005) is a novel by Ian McEwan set in Fitzrovia, London, on Saturday, 15 February 2003, as a large demonstration is taking place against the United States' 2003 invasion of Iraq. The protagonist, Henry Perowne, a 48-year-old neurosurgeon, has planned a series of chores and pleasures culminating in a family dinner in the evening. As he goes about his day, he ponders the meaning of the protest and the problems that inspired it; however, the day is disrupted by an encounter with a violent, troubled man.