With Kyle and his father Simon together again, the beacons are faced with the new step in their journey: seal the darkness, or face the consequences.
An old face returns to Rome, and suddenly Sarah Barnes is missing from the hospital. Meanwhile, Sidney's left at the hands of Rev. Anderson.
Kyle & Allison take their daughter Amber on the run from the demons, as Reverend Anderson brings Megan to the Lighthouse.
Megan must face the consequences of her actions. Meanwhile, a disappearance in Rome leads Kyle & Anderson to a new, dangerous consequence of the rise in possessions.
Mark's body turns up, making Megan feel guilty as she struggles to understand what happened. And Sidney lurks around Rome.
Now that Siobhan knows the truth about "Hood" - what will she/he do?
Many things are happening in Banshee.
Some of them bad.
Some of them very bad.