In 'Whose Shadow Is That?', players assume the role of an unsuspecting postal worker, Charlie, who starts receiving mysterious letters addressed to strangers in his town. As he becomes entangled in their hidden lives, he begins to notice shadows moving independently from their owners, lurking just out of sight. What begins as an innocent fascination spirals into paranoia and obsession, pushing Charlie to decode the connections between the letter's recipients and the eerie shadows stalking him. The choices players make will determine not only Charlie's fate but also unravel a chilling conspiracy that could turn the entire town against him.