Is evil real? Is it a metaphor for the bad things people do or does it prowl the earth like a living, breathing entity that possesses the souls of vulnerable humans?

The Unwelcomed begins with the arrival of a young Radcliffe student at the office of renowned psychotherapist, Dr. Morton Prince. Pursued by a city marshal hellbent on solving the murder of two infants strangled by her father, Clara Fowler relives the nightmare that was her childhood-exalted by Visitations from Jesus Christ and the Blessed Virgin, cursed by the emergence of a demonic presence obsessed with her demise.

What did it all mean? And how did each of these murders link with the serial killings of Jack the Ripper and H. H. Holmes? The answer, the grizzled lawman discovers, is more shocking than he could ever imagine!