Show me a cocktail for a Halloween party. I want a spooky long drink with vodka and gin.

It sounds like you're looking for a spooky cocktail that will leave a lasting impression at your Halloween party! Unfortunately, based on the list of cocktails we've found, none of them contain both vodka and gin as combined ingredients while being long drinks. However, some of these chilling creations could still be great additions to your spooky lineup.

The Ghostbuster cocktail, high-ranking with a 4.8/5 score, is a delight even without gin's involvement. It features vodka combined with pineapple and orange juices, as well as melon liqueur, offering a vibrant and refreshing punch perfect for a Halloween theme. Its origins, tying back to the iconic 1984 film "Ghostbusters," also add a playful narrative to your party.

If you're open to exploring, the Witches’ Brew cocktail may catch your fancy. With a 4.5/5 rating, this bewitching drink is comprised of vodka, peach schnapps, blue curaçao, and tropical juice, delivering an exotic and flavorful experience with every sip. The luscious combination is potent enough to cast a spell on your guests, making it a fantastic centerpiece for any spooky-themed gathering.

Unfortunately, there's no existing concoction with both vodka and gin on this list, but these options should still satisfy your need for spooky and delightful beverages. You might consider adding a splash of gin to your chosen cocktail if you're feeling experimental and adventurous!