At the meeting, Sarah is stunned to learn that Kettlewell was the mastermind behind the plot; he had rebuilt K1 with Winters and Jellicoe to get the launch codes, and had feigned K1's attack at his home. K1 discovers Sarah's presence, and Winters orders K1 to kill her; Kettlewell had never expected to put Sarah in danger and realises Winters is more vicious than he originally thought. When UNIT arrives, Winters, Jellicoe, Kettlewell, and K1 escape with Sarah as their hostage. Harry, having entered Think Tank under the guise of medical inspections, sees the group enter a bunker and warns UNIT before he is captured.