Complex sentence: Well known cases include the George Franklin case, in which Eileen Franklin, George's daughter, allegedly repressed the memory of him murdering her best friend for twenty years before she brought this "truth" to light.
Split into simpler sentences: Well known cases include the George Franklin case, in which Eileen Franklin, George's daughter, accused him of him murdering her best friend. She allegedly repressed this memory for twenty years before she brought the "truth" to light.