NH Cold Case Unit using new technology to investigate disappearance of Tina and Bethany Sinclair

February 3, 2026 - 00:51

This Tuesday marks a somber quarter-century since Tina Sinclair and her teenage daughter, Bethany, vanished from their Chesterfield home. For twenty-five years, their family has endured an agonizing wait for answers, clinging to the hope of resolving one of New Hampshire's most haunting mysteries.

Now, the state's dedicated Cold Case Unit is breathing new life into the investigation by deploying modern forensic technologies not available at the time of their 1999 disappearance. While officials remain tight-lipped on specific techniques to protect the integrity of the probe, such advancements typically include refined DNA analysis, digital evidence review, and enhanced chemical testing that can re-examine old evidence with fresh precision.

The Sinclair family continues to appeal to the public, urging anyone with even the smallest piece of information to come forward. Investigators emphasize that no detail is too minor, as new technological tools can potentially connect overlooked clues from the past. The renewed effort represents a steadfast commitment to pursuing justice, offering a fragile beacon of hope to a family that has lived with uncertainty for decades. The search for Tina and Bethany Sinclair remains an active and urgent priority.