When a teen sports star dies at a party, a police investigation suggests there's more to his passing than meets the eye.

Sarah seeks to disprove accusations of witchcraft against her daughter Harper whilst Abigail resorts to blackmail.

As magic is confirmed at the crime scene Harper makes a shocking revelation which sends Abigail into full revenge mode.

Harper's accusations put suspicion onto her and Sarah, and a memorial vigil incites ill feeling.

Following the dunking, Sarah decides to cast a spell over the whole of Sanctuary. A revelation pushes Abi into action.

Abigail seeks to clear Dan's name by whipping up anti-witch feeling amidst a mystery virus and evidence of dark magic.

With Sanctuary cut off from the outside world, Abigail has free rein to exact the ultimate revenge on Sarah and Harper.