Complex sentence: He tells his wife he will give up the agency, something she has wanted him to do for a long time, but then he learns that Delly has been killed in a car accident on the set of a movie.
Split into simpler sentences: He tells his wife he will give up the agency, something she has wanted him to do for a long time. But then he learns that Delly has been killed in a car accident on the set of a movie.