The natural gas company has a plan to return service to the nearly 8,000 homes and businesses without heat and hot water, but it will take months and require digging up miles of streets. Meanwhile, displaced residents calculate their losses and look for Columbia Gas to make the region whole again.

Residents face the first day of life after what’s now known as the Merrimack Valley Disaster. Uncertain when they will be able to return to their homes, they start to pull together, assess the damage and ask what happened. They are told that a distribution pipe was over-pressurized, which raises...

When WGBH reporters start making their way to the Merrimack Valley, all they know is that buildings and homes are blowing up and catching fire. When they arrive, they discover smoke-filled streets, frightened residents and entire communities wondering if this is over, and what comes next? Soon,...