"She's slightly reckless and totally ruthless and doesn't hesitate to kill. Tauriel is the head of the Elven Guard. She's a Sylvan Elf, which means she's of a much lower order than the elves we all became acquainted with in The Lord of the Rings... She will definitely have a love story. I can't give away too much about it." Lost star Evangeline Lilly on her colourful character in The Hobbit sequel, The Desolation of Smaug.