Complex sentence: Billingsley was kidnapped and held for ransom by a rival of his mobster partners, Mad Dog Coll. The mobsters lured Coll to a telephone booth where he was told he could collect the ransom; he was shot dead by those he was attempting to extort.
Split into simpler sentences: Billingsley was kidnapped and held for ransom by Mad Dog Coll, a rival of his mobster partners. Coll was lured to a telephone booth where he was told he could collect the ransom and shot dead by those he was attempting to extort.