Outlander is much more than a television romance about a World War II nurse and a Jacobite soldier in a fetching kilt. The series--and the massive serial novel on which it is based--has been categorized as a period drama, adventure saga, military history and fantasy epic. Inspired by the Irish legends of Fionn Mac Cumhaill and the prophecies of Brahan Seer, the storyline is filled with mythology and symbolism from around the world, from...