Closure sometimes doesn&8217;t come as quickly as it should.

Just ask David Kyzar and Catherine Hibbs. The two parents live hundreds of miles apart, have most likely never crossed paths and have only one binding tie.

They each lost step-children to murders that became cold cases.

The murder of Kyzar&8217;s step-daughter Rena Davis went unsolved for 11 years.

The first arrest in the investigation of Hibbs&8217; step-son Marshall &8220;Mark&8221; Brown came Wednesday, a year and a half after Brown&8217;s death.

Both families have been quick to hurl the thank yous in the direction of the Adams County Sheriff&8217;s Office. And rightly so.

Three years ago, the ACSO opened a special cold case unit. Two investigators have worked since then to solve four local murders dating back to 1994.

A conviction earlier this year in the Davis case and the Wednesday arrest of three suspects in the Brown case show the effectiveness of the cold case unit.

Not every crime is an open and shut case. Sometimes investigations take months or years. The ACSO investigators have reviewed old evidence, found new evidence and run more tests.

Crime hasn&8217;t stopped, and the investigators have had to split their time between old and new cases.

But most importantly, they didn&8217;t give up.

The goal from the beginning was to offer the families the closure they deserved.

The pain won&8217;t go away now. But,one chapter of it is closed.