The Gang of the Green Mice, a French four-episode documentary series directed by Imen Ghouali and François Troukens, traces the rise of a gang famed for bank heists and cash-in-transit robberies in the early 2000s. The first two episodes are streaming on Canal+, with the final two set to air on Wednesday, September 30, 2026.
From 2001 to 2006, Laurent Cocogne, son of Dédé the Lyonnais, his brother-in-law Serge Quemin, and several accomplices carried out a series of raids on bank branches and cash-transport vans. The gang was notable for its bloodless approach and for the clever techniques they devised to defeat the protective measures around the banknotes.
Criminals are especially drawn to the secure suitcases used by cash-in-transit firms. If pried open, these cases release an indelible paint designed to render the banknotes unusable. The gang then hunts for a flaw to disable the device, earning them successive monikers: the “Mechanics Gang,” the “Washers Gang,” and the “Green Mice Gang.”
The first episode, titled The System, introduces Laurent Cocogne, Serge Quemin, Mad, and Jean-Pierre Borys, as well as the network set up to plan their operations. Witnesses and examining magistrate Annick Corona revisit a case that drew in multiple police and gendarmerie units.
In the second episode, The Flaw, the series focuses on the gang's efforts to bypass the electronic protections of cash transport cases. With no solution in sight, the criminals also decide to target bank branches directly.
The two concluding chapters, The Chase and The Fall, chart the tightening grip of the investigation on the group’s members. As some accomplices flee the country or are remanded in custody, Laurent Cocogne and Serge Quemin are weighing one final operation before they call it a day.
Produced by Docland Yard with Canal+, this four-episode, 52-minute documentary series pairs the heist narrative with the testimony of those who worked on the case. It examines both the gang’s internal structure and the investigative methods used to identify and arrest its members.
Episodes Le système and La faille are available on Canal+. La traque and La chute will air on Wednesday, September 30, 2026 at 9:09 p.m..
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Dates and Opening Time
From September 23, 2026 to September 30, 2026
