Bloodline Detectives

Investigators use innovative forensic techniques to solve a decades-old cold case involving the murder of a young mother.

Meticulous evidence collection by Sacramento law enforcement enables detectives to catch a sexual predator who's long evaded justice.

Detectives manage to find a suspect in the 1956 murder of a young couple — over 60 years after the investigation began.

When a home invasion targeting an older woman leaves a community in shock, investigators turn to genealogical DNA testing to bring a suspect to justice.

A survivor's testimony and detailed forensic analysis help detectives connect a string of cold-case sexual assaults across county lines.

Using a national database, forensic investigators link DNA evidence from two assaults to bring a criminal at large in Alameda County to justice.

Four decades after a child's murder shocks a small town, investigators close in on a new suspect — using the perpetrator's family tree.

After a wrongful conviction in a violent murder case, bloodline detectives step in to uncover the truth — and find the real killer.

A cold case unit brings closure to two families when they use DNA evidence to identify victims linked to a serial killer investigation.

In order to identify human remains found in two shallow desert graves, investigators turn to genetic DNA testing — and uncover a link to a serial killer.