If you know anything about the folks from UpStairs on the Square, you know they love a good party. It should come as no surprise then that they’re turning up the volume on Halloween, celebrating all night in the Monday Club Bar. Throughout the evening, be-costumed guests (be creative – there’s a prize at stake) can enjoy a $40 menu from chef Susan Regis and $8 cocktails from Lino at the bar. A little later in the evening there will also be skaraoke (starting at 9:30pm) and a screening of The Rocky Horror Picture Show. There’s no cover but you will want to make sure you have a reservation by calling 617.864.1933.