Complex sentence: Several characters from the L.A. Quartet, most notably Dudley Smith, were introduced in Ellroy's 1983 novel "Clandestine", which takes place between 1951 and 1955 and makes reference to the Black Dahlia killings and Smith's investigation into them.
Split into simpler sentences: Several characters from the L.A. Quartet, most notably Dudley Smith, are introduced in Ellroy's 1983 novel "Clandestine". The novel, which takes place between 1951 and 1955, makes reference to the Black Dahlia killings and Dudley Smith's investigation into them.