Complex sentence: Caroline Adamson contacts Campion with information but fails to turn up for their appointment-then Stanislaus Oates calls Campion in to Scotland Yard-Caroline has been stabbed and her body dumped in the countryside.
Split into simpler sentences: Caroline Adamson contacts Campion with information but fails to turn up for their appointment. Then Stanislaus Oates calls Campion in to Scotland Yard-Caroline has been stabbed and her body dumped in the countryside.