Halloween isn't just for kids! One of St. Pete's favorite adult (ages 21 and up) Halloween parties returns to the historic Nova 535 celebrating a Decade of Tricks and Treats. The frightfully good time starts at 9 p.m. Wear your best costume to enter the contest and dance the night away to beats by DJ Fresh. Have fun in the scary photobooth and be entertained by skating clowns, aerialists, gogo dancers, a tarot card reader and close-up magic by Cory Van Valin. A full bar and food trucks will keep you going til the party ends at 3 a.m.