Polter, German word meaning to knock, Geist ( Gist )meaning ghost (knock ghost), these disembodied souls make there presence known by being malevolent and mischievous, they are characterized by moving objects and generally cause physical disturbances, including stone throwing, objects levitating, terrible smells, raps, physical and sexual assaults, shrieks, bitings, spitting, pinchings, being punched, repeatedly dialed numbers on telephones, and moving furniture, sometimes the shutting of doors and opening of windows plus the materialization of apparitions occurring frequently.

Poltergeist activity usually starts and stops as suddenly as it begins, lasting from a few hours to years but will rarely last longer than a few months, in modern times poltergeists are widely believed to be a voluntary or unconscious type of psycho kinesis (PK) on the part of the living or so called agent.

Characteristics; Poltergeist activity begains much  like a haunting but escalates as they progress. the activity appears to run in cycles. 

Locations spotted; Just about anywhere  

Present Theories; The phenomena seems to be linked to a type of subconscious psychokinesis (PK) on the part of the agent / victim.

There are 5 stages concerning Poltergeist activity these are;

Stage 1. Attacking the senses.
Feel cold spots.
Hear Strange Noises.
Hear Footsteps.
Smell strange smells.

Stage 2. Attacking the senses more directly.
Hear voices, crying, or laughing.
See moving shadows that catch your eye.
Feel cold breezes.

Stage 3. More positive signs you have a poltergeist.
Electrical appliances can turn on and off without explanation.
Doors open and close without help.
People feel as though they are been touched or grabbed by an unseen force.
Voices will seem clearer and almost audible.

Stage 4. The first level of danger.
People feel stronger pushes and shoves
Objects disappear and reappear sometimes in different places.
Objects can fly around.