The Parasite: When Your Thoughts Are Not Alone

Some fears come from the outside. Others grow quietly inside the mind, watching, waiting, and learning every weakness. The Parasite is a chilling psychological science-fiction tale in which a man becomes convinced that another intelligence is sharing his thoughts-an unseen presence that feeds on emotion and desire while remaining perfectly beyond reach.

As the pressure mounts, reason and reassurance offer little protection. Friendship, love, and even self-control begin to feel dangerous when...