Complex sentence: On the day of the wedding a reported named Jeffrey Starr showed up, who was writing about Rick's time in San Francisco, realizing he could be caught, Rick murdered the reporter, drugged Susan to make it seem the reporter left that night.
Split into simpler sentences: On the day of the wedding a reporter named Jeffrey Starr showed up, who was writing about Rick's time in San Francisco. Realizing he could be caught, Rick murdered the reporter and drugged Susan to make it seem the reporter left that night.