Watch Lost Girl Online. Bo is a young woman who has been living on the run for years, trying to figure out why she kills people when she kisses them. After leaving someone she kills out in the open, she is contacted by a group called The Fae. She discovers who and what she is, and is told to join one of two tribes, either the Light or the Dark. She refuses and chooses the side of humanity instead.Bo agrees to help a will-o’-the-wisp find the person who stole his treasure in exchange for information on her birth-parents. More is revealed of the world of the Fae, including some species of Fae and their society. Bo also gains two allies in her search for her truths.Bo and Kenzi open their own private investigation office. Their first job is to find a missing student at a local college. Kenzi goes undercover at a student at the college and Bo joins campus security to uncover what happened. Meanwhile, Bo and Dyson’s relationship goes on the rocks and another species of Fae is revealed.