Complex sentence: While waiting to hear news on Sherry, John receives a letter from his departed friend and confidant, photographer J.J.J. Pictureman (Crutchley), who warns him not to trust anyone in the town missing a body part as they are possessed by the Mangler.
Split into simpler sentences: While waiting to hear news on Sherry, John receives a letter from his departed friend and confidant, photographer JJJ. Pictureman, who warns him not to trust anyone in the town missing a body part as they are possessed by the Mangler.