Bo and Kenzi open a private investigation office. Their first job is to find a missing student at a local college. Kenzi goes undercover in the college, Bo joins campus security to uncover what happened. Bo and Dyson's relationship goes on the rocks and another species of Fae is revealed.

Bo is hired by a Dark Fae named Mayer to find out how a human managed to win a bet with him. The reward for finding out is having an Oracle reveal something of Bo's past to her. Bo solves the mystery by finding out that a Fae that can jump between human corpses, called a Hsien, managed the deed. In the end, the answers Bo seeks are not given, but she does learn one thing. Her mother is alive, and coming for Bo.

While tagging after Lauren and Bo in the Fae world, Kenzi becomes deathly ill (and incredibly grossed-out) when she inadvertently eats some toxic human soup at the home of an Aswang.

A murder-suicide leads a human household to hiring Kenzi as a Shaman. Accidentally cleansing their house, a psychosis-inducing venomous Fae spider tags along when she returns home.

When Dyson wakes up bloody and without the last eight hours of memory, he finds himself accused of murdering Ba'al, a close associate of The Morrigan's pet psychopath, Vex, and takes refuge in Trick's bar, invoking sanctuary.

Bo finally learns the identity of her mother – and that those closest to her have been keeping secrets. No longer sure who to trust, Bo decides to track down “Mommy Dearest” alone, in order to extract the truth about her own origins once and for all. While everyone frantically searches for Bo, Dyson visits an ancient Norn, a wish-granting, tree-dwelling crone, where – in order to protect the woman he loves -- he makes a sacrifice that may change his relationship with Bo forever, as she prepares for a final face off with her deadly mother.

A nomadic Fae sideshow comes to town looking to take advantage of the chaos that the bombing of the Light Fae headquarters has wrought. Unbeknownst to the general Light Fae populace, The Ash is in a coma, and his bond with the land is weakening, which makes this the perfect time for the travelling circus freaks to steal the most precious thing the Light Fae possess.

In a move of sisterly solidarity, Kenzi drunkenly invokes the Russian hag Baba Yaga to curse Dyson for his behavior towards Bo. In the sober light of day, however, Kenzi and Bo seek to remove the curse.

The Morrigan enlists Bo's help to find a tortured graffiti artist under her employ. The young painter has killed a Dark Fae, and his urban murals are exposing Fae secrets all over town – with The Morrigan on the hook for his actions. In exchange for her help with the case, The Morrigan offers Bo information on breaking The Ash's hold on Lauren.

Trick’s dear friend seeks his assistance when his ballet dancer husband goes missing – or rather, his ballet dancer husband’s corpse. Bo and Dyson track the dead ballet dancer to a bizarre figure, enlisting Lauren for her scientific expertise along the way.

Bo joins the brutal world of underground fighting to help a human competitor juiced up on Fae "steroids" that are sending him on blackout rages – and putting his son in harm's way. Meanwhile, the sister of the first boy she ever killed shows up and confronts Bo over her deadly past.

Bo enlists Dyson’s help to find an artifact she believes will release Nadia from her coma -- even though it might mean having to say goodbye to Lauren.

Bo risks her freedom to do a favor for Lauren, only to discover she’ll have to do it “au naturel.” The new Ash is revealed and Bo’s new appetites shock…has she not recovered from last season’s battle after all?

Bo’s houseguest Vex unwittingly brings “greetings” from a vengeful Morrigan - sparking a chaotic role-reversal that demands humans as Kenzi and Lauren work together to save their Fae friends.

When humans start dissolving into goo, Bo uncovers a nefarious twist to a sexy Key Club. Meanwhile, Bo becomes concerned over Kenzi’s attachment to her forcing Bo to make an extreme revelation about her friend.

Bo faces the daunting task of returning to where it all started: down home on the farm. There Bo faces her old demons - and a new one -to clear the way for the path she will soon be forced to travel.

Reality and fantasy converge as Bo confronts her ultimate challenge. Trick dreads the meaning of something he sees.

Bo and Kenzi become entangled in the schemes of a gated community when a babysitter pleads for their help to prove her employer has met with a foul end. Meanwhile, Lauren comes to a difficult – and dangerous – decision.

Bo attempts an unlikely rescue against an army to save two people who are dear to her – unaware of the dangers facing those she leaves behind. Kenzi has an epiphany about Hale. Dyson is given an important clue to Bo’s past, just as doubt is cast on his own future.

Dyson seeks out an elemental Fae to rescue someone he loves. Kenzi’s stuck on babysitting duty – but her unlikely charge might be the key to cracking the case.

Dyson rushes to be by Bo's side when she puts her life on the line to save a haunted family. At the same time, Lauren finds, much to her dismay, that she can no longer outrun her past.

Bo's pursuit for answers steers the group to a Dark Fae party, with a dangerous guest list. Trick is summoned to appear before the Una Mens.

Bo and Lauren team up to venture into Dyson’s memory when he's on trial for a murder.

After Bo narrowly escapes an attack by a vengeful Fae, the team tracks down who sent it, only to make Bo doubt her feelings for someone she loves. Meanwhile, Kenzi's surprised by a visit.

Bo is forced to make the toughest decision of her life to stop evil from bringing destruction on her world.

Bo goes to hell and back to rescue a friend while Tamsin faces a foe from her past.

Bo needs the help of an estranged family member. Lauren finds herself haunted by a mysterious spirit.

Bo and Tamsin disagree over a young Fae who asks for help. Trick turns to Dyson with a mysterious case and an unwanted partner.

Bo and Tamsin infiltrate the world of college football to investigate a homicide that might expose the Fae. Dyson investigates a murder victim who won’t stay dead.

Bo and the gang attend a party with a mission to take down a new enemy.

Bo risks life and limb to retrieve an elusive Fae painting for a friend. Lauren makes a stunning revelation.

Bo tracks down an old foe who has taken on a new form.