These were the adventures he was to fictionalise in 1903 as "The Riddle of the Sands", his most famous book and a huge bestseller. In 1903, Childers, now accompanied by his new wife Molly Osgood, was again cruising in the Frisian Islands, in "Sunbeam", a boat he shared with William le Fanu and other friends from his university days. Molly's father, Dr. Hamilton Osgood, arranged for a fine 28-ton yacht, "Asgard", to be built for the couple as a wedding gift and "Sunbeam" was only a temporary measure while "Asgard" was being fitted out.