Job Perry is a non-canonical character created for the Agatha Christie's Marple adaptation By the Pricking of My Thumbs. He was the brother of Amos Perry and lived in the village of Farrell St Edmund where most of the action in the later part of the story takes place.
Dr Joshua Waters the local doctor described Job as a little "off kilter", "the way people used to get round here when they didn't see anyone else for generations." Somewhat the same description applies to Amos Perry in the original novel. In this adaptation, some twenty years or more before the events in the story, Lily Waters, Dr Waters's daughter had disappeared. Her body was found two weeks later by Job. It was widely believed that Job had killed her.
It is only towards the end of the story that Job's innocence is established. Septimus Bligh, the local vicar confessed that Job had come to him protesting his innocence and seeking help and support. Septimus had turned him away. Job had then gone to hang himself. The vicar's wife Nellie Bligh persuaded Septimus to help cover up the true facts of the murder and to leave the cloud of suspicion hanging over Job.
Job is only mentioned in retrospect and does not appear in the episode in person.