Haunted after helping her father on his ghost-themed Chicago bus tour, twelve-year-old Claire must discover what the spectral boy from the bus wants before it is too late.

Locked in the science closet after hours by the cool girls who have rejected her, Riley escapes to discover that all the school doors are locked, the phones are dead, and the lights aren't working, and as she roams through the building seeking a way out, she starts to suspect that she isn't alone.

As Will, fifteen, sets out to avenge his brother Shawn's fatal shooting, seven ghosts who knew Shawn board the elevator and reveal truths Will needs to know.

Eager to contact her sister Ever, ghost Riley goes in search of the place where dreams are made, where she finds a renegade ghost boy who has been flouting the rules of Dreamland for decades.

In San Diego in 1918, as deadly influenza and World War I take their toll, sixteen-year-old Mary Shelley Black watches desperate mourners flock to séances and spirit photographers for comfort and, despite her scientific leanings, must consider if ghosts are real when her first love, killed in battle, returns.

At the end of a winter-long journey into manhood, Little Hawk returns to find his village decimated by a white man's plague and soon, despite a fresh start, Little Hawk dies violently but his spirit remains trapped, seeing how his world changes.

Irish orphans Molly, fourteen, and Kip, ten, travel to England to work as servants in a crumbling manor house where nothing is quite what it seems to be, and soon the siblings are confronted by a mysterious stranger and secrets of the cursed house.

Discovering her ability to see ghosts when a cruel act ends her father's life and forces her to move in with relatives in 1920s Pittsburgh, young Ophelia forges a helpful bond with a spirit whose own life ended suddenly and unjustly.

After a Halloween ritual gone awry, Madison finds herself trapped in Purgatory-- or, as mortals know it, Earth. She can see and hear every detail of the world she left behind, yet she's invisible to everyone who's still alive. Her first stop is her parents' apartment, where she encounters the ghost of her long-deceased grandmother. Satan has had Madison in his sights from the very beginning: through her and her narcissistic celebrity parents, he plans...

Months after Anna Korlov opened a door to Hell and sacrificed herself for seventeen-year-old ghost hunter Cas Lowood, persistent visions of Anna being tortured cause Cas to decide to save her as she once saved him.