First broadcast 27th October 1979.<br /><br />After a bomb goes off in the CI5 building and an operative is killed, Cowley gets a sinister phone call to say there will be more deaths.<br /><br />Gordon Jackson - George Cowley<br />Martin Shaw - Doyle<br />Lewis Collins - Bodie<br />Simon Rouse - Phillips<br />Sally Harrison - Susan<br />Norman Gregory - Lake<br />Christopher Fairbank - Billy (as Chris Fairbank)<br />Ian Gelder - King<br />Paul Antony-Barber - Matheson<br />Ben Thomas - Williams<br />James Smith - Pennington<br />Leo Dolan - Murray<br />Peter Jolley - Parks<br />Bill Treacher - Dave<br />Martha Nairn - Lisa Wakeman<br />Terry Yorke - Philip Catrell (as Terry York)<br />David Gretton - 1st Doctor<br />Nalini Moonasar - 2nd Doctor<br />Maxwell Craig - Bystander at Bomb Blast<br />Fred Wood - Passerby (during raid)
