Stephen Bradley Mell, 53, pleaded guilty to committing sex acts with a 15-year-old girl he had been giving flying lessons to. The millionaire allegedly once put his private plane on auto pilot in order to molest the girl during a flight from Cape Cod in 2017. Mell had been seducing and sexually abusing his victim from May to November 2017, and is due to be sentenced on 12 July.