 A promoted mansion party in Montgomery County has been shut down even before it could start today. It was supposed to be in the 5900 block of Sundown Road in Laytonsville. Montgomery County police, after speaking with the owners of the home, they agreed to contact the promoters and cancel it. The promoters are taking and telling the ticket holders the party isn't happening, but the police will be on scene at the expected arrival time just to make sure that those who are there are turned away.