(To VOSPER.) Murdered? She realizes that the DOCTOR is waiting.) UNIT LONDON HQ
(CHIN LEE is a stone's throw from UNIT HQ - on the other side of the square.
Plan: A: The Doctor; Q: Who is recalled by UNIT to help investigate Cheng-Teek's murder? A: Cheng-Tiek's; Q: Whose murder is the Doctor investigating? A: Chin-Lee; Q: Who is under the control of the Master? Summary: The Doctor is recalled by UNIT to help investigate Cheng-Tiek's murder but is unaware that Chin-Lee is under the control of the Master.