Sarada (1973)

A psychiatrist (Shobhanbabu) visits a small village for a friend's marriage. Everyone thinks they've seen a ghost. The doctor soon figures out the reason, in the process finds Sarada (actress/politician Sharada) who believes him to be her missing husband. Sarada has lost her sanity over time, the psychiatrist find that the only way he can help her regain her sanity is by playing along with her madness.