A brazen killer calls police to confess… but without a body, can they prove he’s guilty? This gripping episode of The New Detectives follows two chilling cases where forensic scientists turned bones, tools, and even a payphone into witnesses against murderers who thought they’d outsmarted justice.

He didn’t rob them. He didn’t know them. He just liked watching them die. This chilling episode of The FBI Files reveals how America’s most calculating "hunter of humans" was caught—by outsmarting his own twisted psychology.

They answered their country’s call, but their homecomings came in caskets, their stories told only by bones and battle scars. This gripping episode of The New Detectives reveals how forensic science breathes life back into the lost soldiers of history, solving mysteries that bullets and time tried to erase.

She was taken at knifepoint during a slumber party—in her own bedroom, surrounded by friends. This is the harrowing true crime story of Polly Klaas, the 12-year-old girl whose kidnapping sparked one of the largest manhunts in U.S. history—and exposed the face of pure evil.

Gripping a loaded shotgun, a young girl takes aim and shoots her stepfather. Then, she stabs her mother to death. After killing her parents, she takes her three little sisters and locks them in their room before fleeing the scene. What would drive a teenager to brutally murder their parents? And why would that person intentionally turn their younger siblings into orphans?

A five-year-old girl living with an abusive father goes missing. Her mother tries desperately to get the police and government to look for her. However, it takes two years before action is finally taken to search for the little girl. By that time, she was nowhere to be found.

This case is dreadfully tragic. A man brutally murdered his wife by hitting her repeatedly with a baseball bat. Then, two weeks later, he suffocated his two young step-sons. But his murdering streak did not end until four weeks later when he drowned his two little girls in a bathtub.

pDaniel Printz of Bostic, NC, had brutally murdered an 80-year old woman. No one who would have seen him walking down the street to another nearby parking lot would have had any idea that a serial killer was casually moving among them, satisfied with his kill and enjoying a warm, sunny day in South Carolina. No one would have suspected that he was on his way to put the woman’s body in shallow grave in the mountains of North Carolina.

yAn attractive young woman tells her beauty school classmates that she’s going to step out for 15 minutes. Yet she never returns, leaving her entire community searching for her. First her car is found and then days later her dead, mutilated body turns up on the bank of the Columbia river. What follows next is a lengthy search for clues and suspects, informants and false trails, a confession, a conviction and a lingering question of was the right person sent to prison?

tClaudia Hoerig, who found herself speaking to investigators about the death of her husband Karl after years of investigation. But how did Claudia find herself in this position? What causes a wife to end up murdering her husband, and what was it about this case that would take investigators more ten years to make an arrest?