The Colorado Hammer Attacks - Alex Ewing

In January 1984, a brutal intruder armed with a hammer struck four separate households across Denver in a twelve-day span. The attacks left three adults severely injured and four people dead, including a seven-year-old girl, while a three-year-old survivor was left to be found in a scene investigators would never forget. With no apparent connection between the victims and virtually no physical leads, the cases turned ice-cold for over three decades.