Corey, Travis's younger sibling by a year, is noted for her extraordinary storytelling ability and plays a key role in the novel's events, demonstrating both playful mischief and empathy.

The owner of the inn at Fox Hill, she manages the property with a rational approach and initially doubts the supernatural happenings at the inn.

Martha's husband and one of the inn's caretakers, characterized by his short stature, beard, and perpetual frown, showing a stern but practical demeanor towards the inn’s upkeep.

The cook at the inn with a serious demeanor and tightly pulled back gray hair, who secretly harbors a kind disposition beneath her stern exterior.

A couple visiting the inn in search of supernatural experiences, their ordinary appearance contrasts with their unique hobby of ghost hunting.

A 16-year-old high schooler working at the inn for the summer, known for her blonde hair, freckles, and initially skeptical but later altered view on ghosts.

A self-proclaimed psychic investigating the hauntings at the inn, she is described as short and plump with frizzy blond curls and layers of distinctive dark clothing and jewelry.

A ghost hunter who arrives at the inn with a grandiose persona, marked by his hearse and a striking appearance meant to echo his investigation interests.

A ghostly leader among the shadow children, he often communicates their needs and is depicted as possessing wisdom beyond his age of about ten or eleven years.

A member of the shadow children, about the same age as Caleb, representing a quiet and kind spirit with a sympathetic nature.

Another young member of the shadow children, approximately seven years old, with distinctive red curls and a mischievous spirit tied to Martha Brewster as her distant relative.

A stern and pale figure dressed in a long black dress, serving as the main antagonist with unyielding and harsh traits.

Ada's brother, depicted as having a round but unfriendly face, known for his cruel and selfish ways as the poor farm overseer.