 He played Pip in "Great Expectations" (1981) and Gringoire in "The Hunchback of Notre Dame" (1982), and appeared to have a promising career, but after his appearances in "The Last Days of Pompeii" (1984) and the horror film "Don't Open Till Christmas" (1984), his career and personal life went into steep decline, with him later developing a drug problem.He played a character role in an episode of the TV police serial "The Bill" in 1992, his first acting role in eight years.In 1993, Sundquist committed suicide by jumping under a train at Norbiton railway station.