The Night Visitor

Thriller in which a detective attempts to link a brutal murder to a man incarcerated in an insane asylum.

Salem (Max von Sydow) was sent to the asylum after being convicted of murdering a farmhand with an axe.

When members of Salem's family are discovered to have been killed in an equally brutal fashion, the Inspector (Trevor Howard) is assigned to the case.

After examining the evidence, the Inspector is convinced that Salem is guilty of the crime, but how can he link the murders to a man who was held in a secure facility when they took place?