It's not as good as the Sanji-rejecting-Judge episode falling on Father's Day, but an episode featuring were-animals falling on Halloween is fitting.
Title: "Moonlight Battle - Sulong Berserkers"
Chapters Covered: rest of 987-988
Episode Director: Katsumi Tokoro (*)
Animation Director: Kenji Yokoyama ()
Time: 8:30PM EST
Watch It: www.crunchyroll.com/one-piece