Moonfleet is an 1898 adventure and historical novel written by British writer J. Meade Falkner. The plot is an adventure tale of smuggling, treasure, and shipwreck set in 18th-century England. In 1757, orphan John Trenchard becomes entangled with smuggler Elzevir Block after discovering their hiding place in Moonfleet’s church crypt, which is linked to the legend of Blackbeard Mohune’s lost diamond. Their quest for the jewel leads to betrayal, imprisonment, and loss, but years later John returns home, inherits the diamond’s value, restores the village, and marries his love, Grace, living out his days in Moonfleet.