Plot summary
Bo discovers an illegal fighting ring in which Fae battle Fae and one human that appears to be superpowered. Mel, the sister of the first person Bo killed, arrives in town seeking revenge. Bo's guilt eats away at her, affecting her investigation. Dyson takes the evidence of the underground fighting ring to the Ash, who refuses to do anything about it. It is revealed that the superpowered human's son is Fae and was accidentally drugging him. Bo talks to Mel to clear her conscience, but is forgiven via a cover story that Hale has told Mel. Bo reveals to Trick the vision from the Nain Rouge of her killing him.
Credits
Adapted from Wikipedia contributors, Lost Girl season 2. HTML formatting and reference markers removed.