Complex sentence: The ghost appeared to claim that Fanny had been poisoned with arsenic, and Kent was publicly suspected of being her murderer, but a commission whose members included Samuel Johnson concluded that the supposed haunting was a fraud.
Split into simpler sentences: The ghost appeared to claim that Fanny had been poisoned with arsenic and Kent was publicly suspected of being her murderer. But a commission whose members included Samuel Johnson concluded that the supposed haunting was a fraud.