End of the Road (1970 film)

End of the Road is a 1970 film directed, cowritten, and edited by Aram Avakian and adapted from a 1958 novel by John Barth, and stars Stacy Keach, JamesEarl Jones and Harris Yulin.

After a catatonic episode on a railway station platform, Jacob Horner is taken to The Farm, a bizarre insane asylum run by Doctor D. After being cured, Jacob takes a job as an English lecturer and begins a disastrous affair with Rennie, the wife of a colleague.

Source: Wikipedia