Thomas Doolan went missing on December 6, 2019 in New London, Connecticut. He was living in a sober living facility at the time and had received a text message that morning, the last contact his family had with him. He left most of his possessions behind and hasn't accessed his bank account or used his EBT card since. He only had a black men's mountain bike with a flashlight taped to the handlebars.

Doolan's behavior is uncharacteristic as he never went more than a few days without getting in touch with his daughter and always kept her informed of his whereabouts when in facilities.

His case remains unsolved.