First broadcast 23rd January 1975.br br After a high-powered lawyer gets three petty thugs off on a murder charge, Regan is authorized to use whatever means necessary to bring the hoodlums in.br br John Thaw - Reganbr Dennis Waterman - Carterbr Garfield Morgan - Haskinsbr Tony Selby - Johnny Lyonbr Julian Glover - Bernard Stonebr Morris Perry - Det. Chief Supt.