Chantal Melanson and Austin Monfort had known each other for less than 24 hours before Stephen Paddock opened fire from the 32nd floor of the Mandalay Bay Resort in Las Vegas.
Lee Boyd Malvo was 17 years old when he and John Allen Muhammad terrorized Virginia, Maryland, and the District of Columbia with a series of sniper attacks in 2002.
Walter Miller, a convicted bank robber who escaped a North Carolina prison in 1977, had started a new life in New York, with a wife and children, when his past caught up to him decades later.
Matthew Aimers is accused of sexually assaulting an underage waitress in a bathroom stall and then instigating a drunken brawl at his own wedding reception, according to prosecutors.