Murphy's Law plot
Tommy Murphy is a cop of the 'rough shell, white pit' type. He comes from Northern Ireland, where his family was once held hostage by terrorists. Partly because of the choices Murphy made at the time, the hostage situation for his daughter was fatal. The event still has a huge impact on his life, even as he infiltrates criminal circles in London as an undercover cop. Murphy is firmly committed to never making wrong compromises again, with all the consequences that entails.