Rachel and Alex investigate the violent death of a young monk and find that the Darkside is planning to unseal a secret portal to hell.

One of Rachel's long-time patients inherits the family mansion and is menaced by the "ghosts" that inhabit the house, which result in life-threatening asthma attacks.

Kat faces mortal danger when she resumes her friendship with an ailing Miranda. To save Kat, Rachel must find magic powers from the past, a past she would prefer to forget.