Do you believe in demons?

Ghost hunters Project Reveal were called to investigate a house in Leeds - and they believe they have caught a demonic voice on tape.

Click below to listen to it.

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They said: "Project-Reveal attended a private house in Leeds, where the clients was getting activity which started to scare them. This is one of the things they captured, which sounds like a demonic ghostly voice."

What do you think the voice says? Let us know on Facebook or in the comments below.

The team also investigated Castle Hill - click here to see their findings.

And they went to Bolling Hall in Bradford, where they spoke to a supervisor about its long history of paranormal activity. Click here to watch what happened.

See more videos by Project Reveal here.