“Two Person Telepathy,” also known as the “Second Sight” act, is a classic mentalism performance in which two individuals, typically partners, create the illusion of telepathic communication. In the most common presentation of Two Person Telepathy, one performer interacts with the audience, collecting objects or information, while the other, often blindfolded and positioned on stage, astonishingly identifies or describes these items with uncanny accuracy. The act has been a staple of mentalism since the 19th century and is often framed as an exhibition of psychic or telepathic abilities. Historically, this Two Person Telepathy act has relied on sophisticated methods such as coded language, subtle signals, or prearranged systems to transmit information covertly. Early pioneers like Julius and Agnes Zancig refined intricate verbal and non-verbal codes that became benchmarks for such performances. The Piddingtons and other notable duos later popularized the act on radio and stage, further mystifying audiences with their apparent ability to communicate across vast distances. Despite claims of genuine psychic powers by some performers, these Two Person Telepathy acts are rooted in skillful deception and extensive practice. Two-person telepathy remains one of the most enduring and mesmerizing forms of mentalism, blending theatricality with psychological ingenuity.