When an innocent family is terrorised and their father murdered in cold blood, everyone knows that ruthless criminal Nick Mason is behind it. But when Mason, the "Teflon Man", walks free from his trial - the third time in five years he has evaded justice - Helen calls on Jack Quinn and his team for help.

The team find themselves in a race against time to prevent a deadly new drug targeted at teenagers from flooding the country. The man behind the supply of this drug is one of Britain’s most dangerous criminals, a sociopath with no limits and no conscience… Jack and the gang are faced with their most dangerous task to date and one that will leave more than one life hanging in the balance.