Frank Geyer

Franklin P. Geyer (July 28, 1853 – October 4, 1918) was an American police detective from Philadelphia, Pennsylvania, best known for his investigation of H. H. Holmes, one of America's first serial killers. Geyer was a longtime city employee of the Philadelphia Police Department, and in 1894 was assigned to investigate the Holmes-Pitezel Case. He published the story in his book ''The Holmes-Pitezel Case: a history of the greatest crime of the century and of the search for the missing Pitezel children.''

Son of Reuben K. Geyer and Camilla Buck, Frank Geyer died at the age of 65 due to La Grippe (Spanish Flu) and his funeral was attended by hundreds of policemen and detectives. Provided by Wikipedia