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, updating his own and others' investigative work, correcting certain errors, and reconciling the whole body of valid forensic and eyewitness evidence, was published in early 2021 as Last Second in Dallas.