Peter Easton was a straight-laced man. He worked in PR, got married and had three children, before standing (unsuccessfully) as a Liberal candidate for Parliament in the mid-1970s. He lived in London and in his downtime enjoyed car rallies and military marching music. As a father, perhaps he was a little remote at times. Often busy with work, out of the house or holed up in his home office. “He was quite reticent as a person,” says his youngest child, Antony Easton. “Very square and conservative, my dad.” Antony knew a little about his father’s past, but not much. “He...