206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
Case Description
Any updates on this case?
Adam Frank Heyer, a 39-year-old male of Caucasian ethnicity, was killed on February 14, 1929, during the infamous Saint Valentine's Day Massacre in Chicago, Illinois. Heyer worked as an accountant for the Moran gang, a rival faction to Al Capone's Chicago Outfit. On that fateful day, Heyer was among seven men lined up against a wall in a garage on North Clark Street and shot by four assailants, two of whom were disguised as police officers.
The massacre was part of the ongoing gang violen ...Read More
The massacre was part of the ongoing gang violen ...Read More
Links to Additional Sources (2)
See any mistakes?Victim Details
Adam Frank Heyer
Male
White / Caucasian
Chicago
IL
1929-02-14
Adam
Frank Heyer
11/19/2025
Forum Posts (2)
I've been fascinated by the St. Valentine's Day Massacre for years, and each time I read about it, I... ...Read More
09/26/2023
09/26/2023
Does anyone else feel for Highball, Heyer’s dog, who was tied up during the Saint Valentine's Day ... ...Read More
07/29/2023
07/29/2023
