Complex sentence: Mystery author Harriet Vane is on trial for the murder of her former lover, Phillip Boyes, a novelist and essayist who wrote in support of atheism, anarchy, and free love.
Split into simpler sentences: Mystery author Harriet Vane is on trial for the murder of her former lover, Phillip Boyes. Boyes was a novelist and essayist who wrote in support of atheism, anarchy, and free love.