Ever wanted to be the seventh samurai? How about Death from The Seventh Seal? Or Rosemary and/or her baby? This Halloween, we’re having a costume contest. Submit a picture of you wearing your best Criterion-inspired costume to facebook.com/criterioncollection by midnight on Halloween for a chance to win a spooky Criterion grab bag! We’ll pick our favorites the next morning, and then you’ll have until 5:00 p.m. EST to vote for the grand prize winner on Facebook. Runners-up win a copy of Rosemary’s Baby!