Is this a scam

[samueltx]

Recieved an email saying that this one person had accidently sent me a $100 and if I could send it back to him. I looked at my account, and there is a $100 there. I am not sure if this is a scam or not. Can I just send that person the 100 dollars that is showing up? How do I do that?

[DPCreations]

Could be an accident.  Could be a scam.  Caution.

What are the details of the transaction in your PayPal account.

Did you get charged a fee for the transaction?  Is there an option to refund?

You answer and details will matter in suggesting a course of action.