Do you believe in ghosts? Maybe you will after watching this clip.

Adam Ellis, a resident of NYC, has allegedly been dealing with paranormal activity in his apartment for a few weeks now, and has been sharing updates with his followers online.

Ellis believes that a ghostly spirit named David is haunting his place. David is apparently a little boy who died in the area.

Ellis has uploaded several stories and videos to Twitter and people have been blown away by his findings, but the latest clip is one of the creepiest of all!

The clip centers around Ellis' cat, who starts acting really strangely and seems to be swatting at thin air. The animal then jumps back as if something scared it, but there's nothing there! Very spooky. Check it out for yourself:

What do you think? Is the place haunted or is there a perfectly reasonable explanation?