In Sartre and the Drug Connection, Carole Haynes-Curtis claims that previous commentators on the philosopher's writings have failed to recognize the significance of the impact of a mescalin experiment on Sartre's early philosophical perspective. ‘The residual effects of this nightmarish experience’, Haynes-Curtis claims, ‘haunted him for many years to come’, and was essentially the result of Sartre undergoing what, in modern parlance, is sometimes called a ‘Bad Trip’.