Possession is the power to take over the physical body of another person or creature. Spirits are the only beings seen using this power.

Usually, a non-corporeal being takes possession of a body to exist in the corporeal world.

Overview

Spirits can enter a ghost whisperer's mind to show them their memories. During the vision, their body is vulnerable.

According to Holiday Brandon, an evil spirit can easily possess a ghost whisperer if they are mentally weakened. To prevent this from happening, the targeted ghost whisperer must recall their happiest memories to fight through the negative sensations.