A businessman who beat an elderly Good Samaritan to death as she bravely tried to stop him killing his wife has been convicted of their murders after a jury decided he was probably high on drugs at the time. Daniel Appleton, 38, was said to acting like the “Incredible Hulk” as he launched a frenzied attack on his wife, Amy, 32, on the driveway of their suburban home just days before Christmas last year. Seeing the incident, Sandy Seagrave, 76, tried to intervene, but Appleton turned on the 4’9” pensioner, beating her death with her own walking stick before finishing off his wife. Appleton had claimed to have no memory of the incident and denied murder arguing that he was in the grip of a psychotic episode. But the prosecution said he had possibly taken a synthetic form of LSD and was high when he carried out the killings. On Tuesday Appleton, who ran a successful car repair business, was convicted of two counts of murder by the jury following a seven week trial. Appleton bowed his head as the jury of seven men and five women delivered the unanimous verdict after two days of deliberation. Hove Crown Court was told the horrific killings happened on a quiet residential street in Crawley Down, West Sussex on December 22 last year. The jury heard Appleton and his wife, Amy, who was a teacher enjoyed a comfortable life and owned two homes and a fleet of classic cars.