Items include a shotgun believed to have been used by a member of Al Capone's gang during the St. Valentine's Day Massacre; a threatening letter to President Andrew Jackson believed to have been written by John Wilkes Boothe's father; and an alarm which is thought to have been an alarm against grave robbers in a cemetery.
| Title | History Detectives - Season 7 Episode 3 St. Valentine's Day Massacre; Booth Letter; Cemetery Alarm |
|---|---|
| Year | 2014 |
| Genre | Documentary |
| Country | United States of America |
| Studio | PBS |
| Cast | |
| Crew | |
| Alternative Titles | History Detectives Special Investigations, History Detectives: Special Investigations |
| Keyword | investigation |
| First Air Date | Jul 14, 2003 |
| Last Air date | Jul 22, 2014 |
| Season | 11 Season |
| Episode | 116 Episode |
| Runtime | 60:14 minutes |
| Quality | HD |
| IMDb: | 7.00/ 10 by 3.00 users |
| Popularity | 1.576 |
| Language | English |
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