Complex sentence: He directed two films for Metro Studios: "Peggy, the Will O' the Wisp" and "The Jury of Fate", both starring Mabel Taliaferro, the latter in a dual role achieved with double exposure techniques that were groundbreaking for the time.
Split into simpler sentences: He directed two films for Metro Studios, "Peggy, the Will O' the Wisp" and "The Jury of Fate". Both starred Mabel Taliaferro, the latter in a dual role achieved with double exposure techniques that were groundbreaking for the time.