To promote Hulu's new show, Castle Rock, we were tasked with designing a direct mailer that was non-traditional, intriguing and ultimately garnered attention and encouraged recipients to screen the episodes and write about them. We designed a cylindrical box, printed on the inside and out, paired with a blacklight flashlight that revealed a mysterious message when shined into the "water tank" box. We also included a round booklet with episode information and a DVD screener.