Undetected

Homicide cases are going unsolved in Texas, leaving serial killers to murder again.

by Lise Olsen

Dianne Gonsoulin Hastings, pictured outside her Austin home, spent decades looking for her sister Donna.

The Disappeared

Genetic genealogy is helping to crack cold cases and identify victims left nameless for decades. The process is surprisingly effective—and controversial.

by Lise Olsen