Troubled by the discovery of her supernatural powers, a young neurosurgeon seeks out her birth family, the Mayfairs, and uncovers a dark legacy.

Season two continues the journey of Rowan Mayfair after she has unwittingly given birth to the demon Lasher. She is determined to understand what he has become – human or monster? – and to use him to fulfill her purpose as a healer, but when tragedy strikes, she must put aside her own desires and fight to protect her family.