Army Military Police Corps, Bill Hagmaier became an FBI special agent in 1978. William Hagmaier is a retired FBI special agent and senior administrator who supervised the National Center for the Analysis of Violent Crime, among his many B ureau postings.

Hargrove is available to answer questions from police officers or the press and can be contacted at by phone at 57.

Stempel III of Ohio University, Hargrove co-founded the Scripps Survey Research Center and co-edited a two-volume encyclopedia The 21st Century Voter: Who Votes, How They Vote and Why They Vote published by ABC-CLIO in late 2015.

Icove of the University of Tennessee, Hargrove developed another algorithm that can review the National Fire Incident Reporting System to identify undetected or unreported arsons. The Chicago Police Department conducted a special case review with the FBI in 2019 after the algorithm identified 51 unsolved strangulations of women recovered on the city's South and West sides. The algorithm’s identification of 15 unsolved strangulations in Gary was corroborated in 2014 with the arrest of Darren Deon Vann, who confessed to killing women for decades and then took police to abandoned properties in Gary where the bodies of six previously unknown strangulation victims were recovered. Authorities in Youngstown, Ohio, and Gary, Indiana, opened new homicide investigations in 2010 as a result of Hargrove’s findings. While working as a national correspondent for the Scripps Howard News Service, Hargrove developed an algorithm that uses FBI homicide data to identify clusters of murders with an elevated probability of containing serial killings. He founded the nonprofit Murder Accountability Project in 2015 to track unsolved homicides nationwide. Hargrove is a retired Washington, D.C., -based investigative journalist and former White House correspondent.

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