1950s drama in which a detective is reassigned to the position of Juvenile Liaison Officer for the city of Liverpool and sets about tackling youth crime. Truman (Stanley Baker) is initially unhappy with his new position, feeling that it will thwart his attempts to catch the arsonist doing a great deal of damage to the city. Things improve when he meets and falls in love with Cathie Murphy (Anne Heywood) through the misbehaviour of her younger siblings. However, the misdemeanours of the older brother of the Murphy family, Johnnie (David McCallum), are of a more serious nature and Truman will have to use all of his personal and policing skills to try and keep the family together.