Complex sentence: He told a detective that he had disposed of his wife's body, but implied that she had died after drinking an abortifacient concoction, but when the police investigated the drains outside 10 Rillington Place they found nothing.
Split into simpler sentences: He told a detective that he had disposed of his wife's body, but implied that she had died after drinking an abortifacient concoction. When the police investigated the drains outside 10 Rillington Place they found nothing.