I want to know if anybody has died in the house I live in about 30 minutes ago me and my wife heard a kid laugh through the baby monitor and I ran back there to see if I seen anything but there was nothing there also my newborn was sleeping back there too??

Even if we knew your address, which we don't want to know here on an international site, we couldn't tell you if anyone died in your house.

Just because you heard a child laugh in your newborn's room doesn't mean a ghost; if it is a baby monitor it could have been picking up someone else's signal.

Baby monitors are not a good source of reliability. Someone with a high powered radio could have come through the speaker. They are notoriously getting signals from other places. I wouldn't worry about it unless it becomes a regular thing.

We had a baby cry through our monitor before when it clearly wasn't our child. Those monitors pick up all kinds of things and if this is the only instance of concern, I'd write it off.