Complex sentence: Before becoming a director, Tom McLoughlin was a struggling scriptwriter and also starred in several minor roles in film including playing the monster in John Frankenheimer's 1979 horror film "Prophecy" before eventually working with director Woody Allen in his 1973 film "Sleeper".
Split into simpler sentences: Before becoming a director, Tom McLoughlin was a struggling scriptwriter and also starred in several minor roles in film including playing the monster in John Frankenheimer's 1979 horror film "Prophecy". He worked with director Woody Allen in his 1973 film "Sleeper".