Five books featuring psychological hauntings

Sarah Porter is the author of the Lost Voices Trilogy (Lost Voices, Waking Storms, The Twice Lost) in addition to Vassa in the Night—all for the teen audience.

Her new novel is When I Cast Your Shadow.

One of Porter's five favorite books featuring psychological hauntings, as shared at Tor.com:
Beloved by Toni Morrison

The ghost as embodied mass trauma.

The most visionary of ghost stories