Forced to flee the UK and go into hiding in the 1990's when he became a mole from within the BNP, Matthew Collins returned to Britain to make a new life for himself.
The drama focuses on Collins and his work to stop the radicalisation of young white men before it begins.
The Walk-In Ended after Season 1
ITV aired the final episode on Monday 31st October 2022
The Walk-In Series Guide