St. Valentine's Day Massacre; Booth Letter; Cemetery Alarm
S7:E3
2009
IMDb
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.