By TRIP GABRIEL, MATTHEW HAAG and JON HURDLE

Before Cosmo DiNardo confessed to killing four young men in Bucks County, Pa., there were signs of a volatile, bullying personality getting worse over time.

Published: July 16, 2017 at 05:00PM

from NYT U.S. https://www.nytimes.com/2017/07/17/us/bucks-county-pennsylvania-murders-cosmo-dinardo-.html?partner=IFTTT
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