This email hoax comes in the form of 2 emails from the same sender, and appear to come from the FBI.
The first email is supposedly from FBI Director Robert S. Mueller III, and states that you are eligible for a large sum of money and that it can be claimed by providing FBI Identification Record and a Certificate of Ownership. The email contains images and content taken from the official FBI web site, so at a quick glance it may seem official.
The second email supposedly comes from Donna M. Uzzell. This email tells you that the certificate ownership is supplied at a cost. It then gives instructions for sending money to the FBI in Nigeria to issue the certificate. Then the email starts to threaten you that the FBI can track you down if you don’t fill out the paperwork, and that they will charge you.
This is an email hoax, please do not respond to it.