Complex sentence: Nicky, suspecting that Birch is dead, tricks Rafe into revealing that Birch was killed him when he broke into his home, but Rafe takes the blame to protect his son.
Split into simpler sentences: Nicky, suspecting that Birch is dead, she tricks Rafe who's admitting that he is dead. He says that he killed him when he broke into his home and takes the blame to protect his son.