Uptight is a 1968 American drama film directed by Jules Dassin. It was intended as an updated version of John Ford's 1935 film The Informer, based on the book of the same name by Liam O'Flaherty, but the setting was transposed from Dublin to Cleveland. The soundtrack was performed by Booker T. & the MG's. The assassination of Martin Luther King Jr. is used as a backdrop for the film's fictional narrative.

The Informer is a 1935 American drama thriller film directed and produced by John Ford, adapted by Dudley Nichols from the 1925 novel of the same title by Irish novelist Liam O'Flaherty. Set in 1922, the plot concerns the underside of the Irish War of Independence and centers on a disgraced Republican man, played by Victor McLaglen, who anonymously informs on his former comrades and spirals into guilt as his treachery becomes known. Heather Angel, Preston Foster, Margot Grahame, Wallace Ford, Una O'Connor and J. M. Kerrigan co-star. The novel had previously been adapted for a British film of the same name in 1929.