In 'Whose Shadow Is That?', players step into the shoes of an amateur detective who receives a cryptic letter from an anonymous source claiming they can reveal the identity of a long-lost sibling. As the protagonist, you must navigate a series of intricate puzzles and moral dilemmas, all while questioning the thin line between reality and paranoia. The shadows of the past loom large as you unearth hidden secrets within a decaying mansion that sits at the heart of a deserted town. Will you solve the mystery and figure out who you can trust? Or will the shadows of betrayal consume you?