Eugene Palmer is the focus of this week's episode of "In Pursuit With John Walsh," which airs on Investigation Discovery, at 10 p.m. Wednesday.

In September of 2012, Palmer went on the run after allegedly killing his daughter-in-law in Rockland County. Palmer has not been seen since, with some thinking he died while on the run; others, including law enforcement, believe he is still alive.

In May of 2019, the FBI announced that Palmer, now 80, had been added to the agency's Ten Most Wanted Fugitive List.

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Palmer faces a murder charge in the death of Tammy Palmer.

For the episode, Walsh worked with investigators in Haverstraw. Tammy Palmer, Eugene Palmer's daughter-in-law, was shot in her backyard, over what is alleged to have been a long-running feud between the two over a home that Tammy occupied on land belong to Eugene Palmer.

Despite multiple searches, no trace of Eugene Palmer has been found.

"In Pursuit With John Walsh" takes viewers through unsolved violent crimes with the hope that someone in the audience may have information that leads to the cases being closed.

Viewers with any information about Eugene Palmer’s whereabouts can call or text a hotline at 1-833-3-PURSUE, or submit online at InPursuitTips.com. Both are staffed by Spanish-speaking operators who will accept anonymous tips and alert the proper authorities.

Karen Croke is the Community Content editor for lohud.com and poughkeepsiejournal.com. Find her stories here and subscription offers here. Reach her at kcroke1@lohud.com