The 1978 cold case murder of California high school teacher Diane Peterson, who was stabbed to death, has been solved this year, officials confirmed.

Investigators have solved the cold case murder of a San Jose teacher stabbed to death at Branham High School nearly 50 years ago, naming a teenager who was originally suspected in the crime as the ...

The Peterson case is the fourth cold case homicide solved by the office in 2025. A family member of the teacher said, “Diane was a beautiful and wonderful person who is missed dearly ...

Branham High School teacher Diane Peterson (Image courtesy the Peterson family via SCCDAO) Investigators cracked the cold case after meeting with Nickerson’s family member this year, according ...

The Peterson case is the fourth cold case homicide solved by the office in 2025. A family member of the teacher said, “Diane was a beautiful and wonderful person who is missed dearly ...

Branham High School teacher Diane Peterson (Image courtesy the Peterson family via SCCDAO) Investigators cracked the cold case after meeting with Nickerson’s family member this year, according ...

The Peterson case is the fourth cold case homicide solved by the office in 2025. A family member of the teacher said, “Diane was a beautiful and wonderful person who is missed dearly.” ...

The Peterson case is the fourth cold case homicide solved by the office in 2025. A family member of the teacher said, “Diane was a beautiful and wonderful person who is missed dearly.” Tags ...

The Peterson case is the fourth cold case homicide solved by the office in 2025. A family member of the teacher said, “Diane was a beautiful and wonderful person who is missed dearly ...

The Peterson case is the fourth cold case homicide solved by the office in 2025. A family member of the teacher said, “Diane was a beautiful and wonderful person who is missed dearly.” Suggest ...