Crime & Safety

Former Investigator Says Gilbertsville Suspect 'A Textbook Pathological Liar'

Former Police Chief David C. Eshbach was a lead investigator in a series of York County burglaries committed by Mark Geisenheyner in the 1990s.

Former Police Chief David C. Eshbach said he was "horrified, but not surprised" to learn . 

Police say Geisenheyner, 51, entered a house at 50 Renninger Road in Gilbertsville, Douglass Township around 11:30 p.m. on Saturday, July 2, .

Eshbach—a former police chief in Springettsbury Township, York County—was the lead investigator in a rash of some 60 burglaries committed by Geisenheyner and his accomplice in the 1990s.

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"They were hitting one house after another," Eshbach said of the duo that stole many guns and other items. "When you're doing that, you're taking a hell of a risk."

Geisenheyner was reckless, didn't consider consequences, and was the type of guy who would want to "go down in a blaze of glory," said Eshbach. 

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"I remembered him right away," Eshbach said of seeing news reports with Geisenheyner's photo after the recent murders.

"He was just a textbook pathological liar," Eshbach said. "Looking back on it, you could see the capacity was in him to do something like that." 

Background

On July 3, Montgomery County District Attorney Risa Vetri Ferman and Douglass Township Police Chief Barry L. Templin Jr. as Paul Shay and his wife, Monica, their nephew Joseph Shay, Kathryn Erdmann and her son, Gregory.

, 43, of Yarmouth, MA, and New York, NY, and Gregory, 2, were shot in the head and killed. Monica Shay, 58, died the following Thursday, July 7, said Paul Hoffman, Deputy Coroner for Lehigh Valley County. 

Erdmann, 37, of Fall River, MA, and Paul Shay, 64, of New York, NY, are expected to survive gunshot wounds to the head.

On Monday, July 4, Montgomery County First Assistant District Attorney Kevin Steele confirmed that the Delaware County medical examiner .

A background search on Geisenheyner shows he lived in several Pennsylvania locations, including Pottstown, Downingtown, Wallingford and Philadelphia.

Geisenheyner reportedly told others he planned revenge against Paul Shay over an insurance scheme, but Montgomery County District Attorney Risa Vetri Ferman said there's no evidence to support the story.

"I don't know if it's true or not, which is why we're investigating. We do not have evidence that any of this is true, beyond that it's what he told to many different people," said Ferman. "We're not making any statements that these things, in fact, ever happened."

Recently, testing was conducted to learn whether Geisenheyner, 51—suspected killer of two adults and a child—, The Associated Press reported.

Geisenheyner's pituitary gland was removed during an autopsy and sent for tests, said Trish Cofiell, a spokeswoman for the Delaware County medical examiner.

According to the AP, Coroner Fredric Hellman was told by an investigator and a member of Geisenheyner's family that he had a tumor, Cofiell said. Hellman did not confirm that and said test results may not be available for weeks. The coroner also sent for Geisenheyner's medical records, Cofiell said.

A SWAT team on July 4 —a suspect in the shootings of five people that left a child, man and woman dead in Montgomery County—after a six-hour standoff with police in Trainer, in Delaware County earlier this month.

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