<P> The following characters are tied to a government project related to the development and use of the Machine: </P> <Ul> <Li> Camryn Manheim as Control, the woman who is the head of the ISA's operation (code - named Northern Lights) regarding The Machine . To protect The Machine, she sanctioned ("Asylum") the suicide bombing that killed Ingram and caused Finch's injuries . When the plug is pulled on "Northern Lights", she is unwittingly installed as puppet head of Samaritan, a position in which she becomes more frequently uneasy . She confronts Greer and is taken away to an unknown fate by his men . </Li> <Li> Boris McGiver as Hersh, Special Counsel's enforcer, a former member of the ISA . He is killed in a confrontation with Decima forces . </Li> <Li> Jay O. Sanders as Special Counsel, a shadowy figure from the Office of Special Counsel who appears to be coordinating the activity regarding the Machine and sees Reese as a threat . He is killed by Hersh on Control's order . </Li> <Li> John Doman as Senator Ross Garrison, a U.S. senator charged with overseeing Northern Lights . </Li> <Li> Elizabeth Marvel as Alicia Corwin, a liaison between Ingram and the government while the Machine was being developed and a former member of the National Security Council . She is killed by Root . </Li> <Li> Cotter Smith as Denton Weeks, the official who commissioned the development of the Machine while he was a deputy director at the NSA . He is killed by Root . </Li> </Ul> <Li> Camryn Manheim as Control, the woman who is the head of the ISA's operation (code - named Northern Lights) regarding The Machine . To protect The Machine, she sanctioned ("Asylum") the suicide bombing that killed Ingram and caused Finch's injuries . When the plug is pulled on "Northern Lights", she is unwittingly installed as puppet head of Samaritan, a position in which she becomes more frequently uneasy . She confronts Greer and is taken away to an unknown fate by his men . </Li> <Li> Boris McGiver as Hersh, Special Counsel's enforcer, a former member of the ISA . He is killed in a confrontation with Decima forces . </Li>

What happened in the final episode of person of interest