A journalist is aided by a young female hacker in his search for the killer of a woman who has been dead for forty years.

A week before Christmas, Estelle lands at Arlanda Airport. A year earlier, she had left Stockholm on the run with her husband Tommy and their daughter, after Tommy had taken part in one of the biggest robberies ever in the history of Swedish crime. Estelle seeks out Tommy's former cronies and claims that Tommy is on his way home. And he wants his share of the take. Word spreads like wildfire through Stockholm's underworld. If Tommy returns, the city will explode. And if he doesn't ... something even worse might happen. TOMMY is the story of the woman behind the man behind the headlines. A modern myth about when the Queen returned and the city burned. About two sisters, two mothers, three daughters and their men.