Lost Girl: Season 1, Episode 4

1 - 4: Faetal Attraction

When a Fury with an unfaithful spouse tries to hire Bo to kill her husband's mistress, Bo instead takes the side of the unsuspecting human woman and puts her under protection. Things quickly spin out of control, however, after the husband ends up brutally murdered, leaving Bo scrambling to contain a mess of jealousy and violence and unravel the mystery of the real killer – as Kenzi nearly becomes the next victim.

Dyson has to submit to therapy at the cop shop when his romantic frustration over Bo causes anger issues, leading him and Bo to patch things up.