Maria Benson is just a 200-level university student trying to live a normal life, until she suddenly inherits the magical powers of her great grandmother. At first, Maria sees her new abilities as nothing more than fun. But when the spirit of her great grandmother, Sarah, appears to her, Maria discovers that her powers came from a dark deal made decades ago. Sarah wanted power. She got it. But every deal with the supernatural has a price. Now an ancient demon named Calius has come to collect what he believes belongs to him. Maria must learn to control powers she never asked for while uncovering the truth about her family’s past. But the more she learns about Sarah’s deal, the more she realizes something terrifying: She may not have inherited Sarah’s powers. She may have inherited her debt.