Complex sentence: Martin stands against the wall and describes the businessman raping and murdering her, and when it is over he turns to face Helen on the bed only to find that she has been sexually assaulted and strangled--seemingly at his hand.
Split into simpler sentences: Martin stands against the wall and describes the businessman raping and murdering her. When it is over he turns to face Helen on the bed, only to find that she has been sexually assaulted and strangled--seemingly at his hand.