Brian Friedkin

Brian Friedkin was a High ranking member of the CIA. For years, he had been receiving orders from someone he didn't know, on one phone. Shortly after Miracle Day he was ordered to have anybody with knowledge of Torchwood killed. He ordered Lyn Peterfield to poison Captain Jack Harkness, but Jack was given an antidote and survived. (TW: Rendition)

Rex Matheson later forced Friedkin to tell him who he was working for, and what he knew about the Miracle. Friedkin gave Rex his phone, his only means of contact with those who gave him his orders. (TW: Dead of Night)