Complex sentence: Graham Hess (Mel Gibson) is a former Episcopal priest who no longer practices since his wife Colleen (Patricia Kalember) was killed in a traffic accident caused by veterinarian Ray Reddy (M. Night Shyamalan).
Split into simpler sentences: Graham Hess (Mel Gibson) is a former Episcopal priest. His wife Colleen (Patricia Kalember) was killed in a traffic accident caused by veterinarian Ray Reddy (M. Night Shyamalan).