Josiah "Tink" Thompson is an American writer, retired professional private investigator, and former philosophy professor. In 1967, he published both The Lonely Labyrinth, a study of Kierkegaard's pseudonymous works, and Six Seconds in Dallas: A Micro-Study of the Kennedy Assassination. The culmination of his half-century-long Kennedy assassination project was published in early 2021 as Last Second in Dallas.