Unsuspecting shoppers at the Samsung store in London's Westfield mall almost jumped out of their skins when Samsung and its agency Cheil U.K. pranked them just in time for Halloween. As shoppers considered a Samsung curved UHD TV, a pleasant-looking sales assistant invited them to take a closer look at the screen's immersive qualities. Once distracted, a zombified lookalike deftly switched places with the sales assistant, prompting some rather alarmed reactions from the shoppers. Happy Halloween! (Now buy a TV, will you?)