Although they perform a vital service, police dogs aren't the only creatures to keep track of at crime scenes-wild animals can play a role, too. This program studies the usefulness of canines and the often confusing influence of scavengers as it documents coursework at the University of Central Lancashire's Forensic Science department. In addition to portraying the police skills of man's best friend and the difficulty of locating victims' remains...

John Puller may be the US Army's most tenacious investigator, but he is not equipped to face the truth about his mother's disappearance thirty years ago. New evidence has come to light suggesting that Puller's father -- a highly decorated army veteran -- may have murdered his wife. When Puller's friend, intelligence operative Veronica Knox, arrived on the scene, he realized that there is far more to this case than he first though. He knows that nothing...

"After 30 years, Detective Jim Scharf arrested a teenage couple's murderer--and exposed a looming battle between the pursuit of justice and the right to privacy. When Tanya Van Cuylenborg and Jay Cook were murdered during a trip to Seattle in the 1980s, detectives had few leads. The murder weapon was missing. No one witnessed any suspicious activity. And there was only a single handprint on the outside of the young couple's van. The detectives assumed...

Detective Tracy Crosswhite has a skill, and a soft spot, for tackling unsolved crimes. Having lost her own sister to murder at a young age, Tracy has dedicated her career to bringing justice and closure to the families and friends of victims of crime. So when Jenny, a former police academy classmate and protégé,, asks Tracy to help solve a cold case that involves the suspicious suicide of a Native American high school girl forty years earlier, Tracy...

When his ex-wife asks him to investigate a sudden crime wave in the Mid-West, Harry Duncan quickly finds himself in conflict with a violent syndicate that targets both him and his ex.

In the new edge-of-your-seat adventure from national bestselling author Nick Petrie, Peter Ash pursues one case--and stumbles into another--in the City of the Blues. Iraq war veteran Peter Ash is restless in the home he shares with June Cassidy in Washington State. June knows Peter needs to be on the move, so she sends him to Memphis to help her friend Wanda Wyatt, a photographer and war correspondent who's been receiving peculiar threats. When...

In this video, former FBI agent and ABC News consultant Brad Garrettundergoes the various tactics police use when interviewing suspects.

In 1888, Jack the Ripper—the most infamous serial killer of all time—began his reign of terror in the East End of London. He committed five horrifically violent murders in Whitechapel between August and November of that year. There was a huge manhunt, but the Ripper was never caught. Since then, there has been endless speculation about who the Ripper was, what motivated his crimes, and how the killer escaped justice. Emilia Fox, the star of BBC...

Before DNA testing, prosecutors relied on less-sophisticated forensic techniques, including microscopic hair analysis, to put criminals behind bars. But how reliable was hair analysis?