Air date: 2019-06-05

Runtime: 42 min

Theresa Wesolowski, 22, is murdered on May 29, 1999; police are baffled for nearly 10 years before finally getting a break when a new DNA technique identifies her killer.

Air date: 2019-06-12

Runtime: 42 min

Sandra Berfield suffers years of harassment from a co-worker and has him jailed for violating a restraining order. Later, Sandra is killed instantly after picking up a package left on her front porch, which held a pipe bomb.

Air date: 2019-06-19

Runtime: 42 min

Gayle Isleib is brutally shot to death on April 30, 1996. Police investigate and identify her killer; they find love poems as well as evidence that the killer planned to kidnap Isleib and murder her husband.

Air date: 2019-06-26

Runtime: 42 min

In 1995, Robert Henry, an exec in Tacoma, WA, was murdered by a masked gunman. His wife tells police she thought he was killed by a former business associate. Det. Yerbury investigated and pieced together the evidence that convicted the killer.

Air date: 2019-07-03

Runtime: 42 min

Leesa Nascimento was murdered on July 6, 2010 by being shot in the head. The killer is traced after evidence is found that ties them to the murder.

Air date: 2019-07-10

Runtime: 42 min

Alice Hufnagle is raped and murdered on Nov. 22, 2002; after following numerous leads and dead ends, police find the vital clues that lead them to the killer.