Armchair Fiction presents extra large paperback editions of classic science fiction double novels. The first novel, “The Life Watch,” a brilliant imaginative yarn by master writer Lester del Rey. The spread of alien culture across wide wastes of space, with its remorseless destruction of human life, has chilling implications even for the literal-minded. The second novel, “Creatures of the Abyss,” by Murray Leinster chronicles superstition and fear off the Philippine Coast. How else explain the sudden disappearance of a vessel beneath a mysterious curtain of foam? The writhings of thousands of maddened fish trapped in a coffin-like area of ocean? What monsters gorged at the bottom of Luzon Deep and what were their plans?