 Olivia admits to Walter how she found the address and learns that her brain still contains some of John 's memories . <unk> to discover what else John knew and prevent any further visions from occurring , Olivia insists on returning to Walter ’ s sensory <unk> tank . Inside the tank , Olivia sees a memory of John in a restaurant . Despite Walter 's <unk> protest that it is impossible , Olivia is convinced that John Scott saw her . Afterwards , she sees John meeting with Mark and two other unidentified men . After Mark and another man leave , John kills the other man . Olivia believes the group were looking to sell the compound as a street drug , and is able to track down the other man , George <unk> ( <unk> <unk> ) . Once <unk> , he denies killing Mark and demands immunity and protection from Massive Dynamic , who he believes was responsible for Mark 's death as well as other recent fringe events . Olivia confronts Nina Sharp ( Blair Brown ) about her suspicions , but George is murdered before he can be of further help to them . Later that night , Olivia gets another email from John Scott simply saying , " I <unk> <unk> . IN THE <unk> . " 
