CURSES! Ming the Merciless is assembling his intergalactic troops on Planet Mongo and is about to annihilate Earth! There's only one thing for it - send for Harry Grindell Matthews. Who? Er... That'll be Harry 'Death Ray' Grindell Matthews, eccentric British inventor and the genius behind a real-life laser-gun that Flash Gordon and his comic-book colleagues could only have dreamed of in the 1920s. Mr Grindell Matthews designed the fiendish machine in the wake of the 1914-18 war as a weapon for knocking enemy aircraft out of the sky.