Linda Tuck has never given up hope that her sisters’ killer would be found and brought to justice, even after two years of waiting. Her constant partner in the fight was — and still is — Hertford County Sheriff Juan Vaughan Sr.

Vaughn was on the scene after the bodies of sisters Nellie Bradley, 71, and Dorothy Hobbs, 74, were found outside Murfreesboro, N.C., on Aug. 4, 2006.

The image haunted him — one of only two times he has shed tears at a murder scene, Tuck said.

For two years, both Tuck and Vaughan kept in constant contact about the case — refusing to let it turn cold. Vaughan called or e-mailed Tuck at least once a week.

When a suspect was arrested in the case this week, allies Vaughan and Tuck were back in touch again.

The sheriff’s persistence in both the case and in keeping Tuck informed is to be admired and commended.

Vaughan was clearly touched by the case, and we are moved by his tenacity.