Halloween. It can only mean one thing... it's time to get your spook on. On Wednesday night starting at 9 pm, head over to M Bar & Lounge at the Mandarin Oriental Hotel for The Haunted Ball Halloween celebration. You must be 21+ to attend because they will be offering signature Crystal Head Vodka libations that you can sip on until 2.a.m. like Highway to Hell with Crystal Head Vodka, jalapeno, ginger simple syrup, ginger ale and lime, or Bare Bone Pomegranate with Crystal Head Vodka, pomegranate and fresh lemon juice. Try the Crystal Cooler with Crystal Head Vodka, passion fruit juice, lemon juice and soda water. Come dressed up and you may even be crowned "Best Dressed" of the night at the costume contest. M Bar & Lounge is located inside the Mandarin Oriental, 776 Boylston Street in Boston. Admission is free.