As Sally lies dying on the cold street outside a vampire blood den, Aidan is inconsolable—even when Sally's ghost appears and she tells him that it’s time to move on he seems frozen in time. Once he finds out that Sally won’t get a door to move over into the beyond, Aidan is even more upset. Sally is stuck in his world but he can’t touch her.
Although they haven't spoken in more than a year, Aidan calls Bishop to solicit his help. Bishop is annoyed, but he also sees the opportunity to bring Aidan back in to the vampire fold. After Bishop takes care of Sally’s body, the two of them have vengeance on their mind. They track down Josh and Ray at a deserted warehouse where Josh is distraught about Sally but Ray is still full of anger and violence.
Josh apologizes to Aidan as best he can so Aidan chooses to let Josh live but kills Ray right in front of Sally's ghost. Sally is horrified and Josh is, as usual, tormented.
A year later, things are very different for all of them.
Aidan has ingratiated himself to Bishop by turning the hospital where he works into a food supply chain for untainted blood. A virus, which is fairly harmless to humans, has been decimating the ranks of the vampires and Aidan’s supply line is helping to keep the vampires alive. Unfortunately, Nora has become part of the endeavor and, in the process, has become addicted to drugs. Even though he's now a part of the vampire culture, Aidan dislikes the way Bishop runs his house.
Meanwhile, Josh has carved out a quiet life as a cashier in a pie shop. A place where he toils away as Sally haunts the place and tries to force Josh to make a better life for himself. Sally seems to think that Donna, her witch frienemy, will be able to help her get back to her own time.
What goes on behind the scenes for the score of Being Human? Watch this interview with composer FM Le Sieur.
Sally makes a major sacrifice to keep two of her roommates from killing each other €“ a move that will change all of the roommates€™ lives forever.
The cast reflects on how the show has changed them over the 4 seasons.