Josh and Nora search for Donna; Aidan breaks Kenny out of the hospital.

Aidan is hounded by his past; Sally finds out her mother is dying.

Josh deals with his relationship with Nora; Aidan helps Suren; Sally discovers new ghostly powers.

Josh and Nora prepare for another "change"; Sally looks into reincarnation; Aidan dates a human.

Josh is miserable after his latest full moon transformation resulted in him waking up next to a bloody dead deer in the woods. Aidan suggests that he and Josh should live together so they can watch out for each other. When they've found the perfect apartment, they realise the place comes with its own ghost, Sally

Sally begs the guys to call Danny over so she can try to make him see her presence somehow. Aidan, while trying to fight off Cara's unwanted admiration, receives some shocking news about someone who he thought was dead. Josh discovers Aidan's involvement in the Rebecca incident and confronts him about it; at the same time, Josh is also struggling with whether to tell his sister the truth about himself.

Aidan's relationship is taken to a new level; Josh's search for a werewolf cure continues.

Sally becomes locked in a dream world; Aidan, Josh and Zoe fight for their life.

Sally reaches out to Aidan; Josh helps Aidan locate untainted blood.

Josh is trapped inside his wolf as Nora and Aidan struggle to contain him; Sally finds herself imprisoned in a mysterious place with Donna.

Sally gets bombarded by ghosts at the hospital; Josh is hesitant about his date with Nora.

Bernie is seriously injured in a car accident leaving Aidan to make a tough decision. Josh wants to slow down his relationship with Nora. Sally meets an old crush, who is also a ghost.

Liam returns with an agenda for Aidan; Sally tries to figure out what's wrong with her body; Nick hides a secret.

Sally meets a ghostly new friend who teaches her how to cross physical boundaries like the apartment. Josh gets roped into the Neighborhood Watch against his wishes. Aidan is recognised by the son of one of his past victims, who is determined to confront Aidan about his father's murder.

Josh meets a werewolf who teaches him how to accept the change and is more than meets the eye. Aidan begins a dangerous relationship with an acquaintance. Sally learns that she needs to stop interfering in the lives of those she left behind.

Josh is forced into "dog" fighting. Aidan is forced to play the good "son," while the elders are in town, and Sally has to act as a mediator between the two.

Aidan deals with vampires; Josh prepares to reenter medical school; Sally's powers strengthen.

Aidan tries not to go back to his old lifestyle; Josh meets a brother and sister werewolf; Sally connects with an old friend.

Josh and Julia face their past; Sally is offered a job; Aidan and Suren get rid of Boston's fringe vampires.

Aidan and Suren look forward to their future together, Josh chooses between Julia and Nora; Sally tries to fix one of the lives that she ruined.

Sally flirts with an old acquaintance; Aidan searches for blood; Josh considers taking his relationship with Nora further.

Josh reconnects with Emily; Aidan's blood supply is jeopardized; Sally gets in touch with a friend from her past.

Aidan has his hands full with a problem created at Bishop’s request. Sally remembers the details that led to her death. Josh learns the truth about the night that led to his change.

Aidan receives a “video postcard” from an old friend. Sally takes Aidan up on his offer to “take care of her problem.” Josh’s sister moves in with them which causes problems for the roommates. Josh goes on a date with a nurse from the hospital.

Josh has an odd and interesting homecoming. Sally attempts to protect Bridget from Danny but fails. Aidan deals with the aftermath of Marcus' attack.