Gerry Anderson Classicbr ITC Entertainment & 21st Century TV Production (Supermarionation)br Drum Signature x: 9 (Part 1 of 2)br br Spectrum are puzzled by the Mysterons plot to assassinate time so Colonel White set up a field headquarters with four of the Captains taking charge of each headquarter in several cities to report anything suspicious going on. br br Elsewhere, Captain Black attempts to kill a leading brain surgeon so that the Mysterons can reconstruct him to carry out their threat.