The brutal 1969 murder of 22-year-old Betsy Aardsma inside Penn State’s Library remains unsolved over 50 years later. With no witnesses, few clues, and a crime scene wiped clean, investigators were left with more questions than answers. Who killed Betsy, and why?

Source Materials:

The Unsolved: Betsy Aardsma – The Morbid Library

Unsolved murder of Penn State student Betsy Aardsma haunts community 52 years after she was stabbed in library stacks

Mystery over Thanksgiving murder of Betsy Aardsma who was stabbed to death in porn aisle of Penn State library | The US Sun

The oldest cold case from every state

The Murder of Betsy Aardsma at Penn State – Crime and Coffee Couple

Betsy Aardsma Murder: Mystery Still Surrounds Death Of Penn State Student | Crime News

Betsy Aardsma: Unsolved Penn State Library Murder - Historic Mysteries