I don't think I even got the whole message, Just "... ficer Robert Williams, *unintelligible* FBI Hotline. If I do not hear from you or your attorney, You can only watch as things end for you badly." kinda tripped me out because earlier today I got hit by one of those popups that tries to lock your browser in full screen and demand ransom.
Call from an Officer Robert Williams. Sounds like a computer generated voice. It informs me that either I or my attorney must return the call or some dire consequence will ensue.
Its a scam. If you were in real trouble the police would visit you in person.
If you call back the officer will give you a chance to buy your way out of trouble. He'll demand a lot of money to be paid by credit card or by giving him your banking information right this minute. He'll take all of your money and vanish.