PR Starbucks whips up spooky thrills with Zombie Frappuccino After the tremendous success of the Unicorn-themed beverage, the coffee chain is attempting to catch viral success again this Halloween. By Kevin J. AllenOct. 30, 2017 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.