Nine small islands, called the Isles of Shoals, lie off the coast just over the line between New Hampshire and Maine. One of them, Smuttynose Island, has a mysterious past. Traditional stories going back to the early 19th century, amplified by poetry, folklore and modern tour-guide apocrypha,...

In March 1815, in London, Elizabeth Fenning served a plate of dumplings to the family that employed her as a cook. Almost all members of the household, including Eliza herself, became violently ill, apparently poisoned. Barely four months later Eliza was dead, hanged for attempted murder after a...