1 doctor duquesne’s ruse
2 plan xv 218
3 duquesne captures a battleship
4 a world is destroyed
5 thought—a sixth-order wave
6 mind versus matter
7 duquesne visits norlamin
8 into the fourth dimension
9 master of earth
10 captured!
11 hyper-land
12 reunion
13 the return to space
14 wanted—a planet
15 valeron
16 within the chloran dome
17 quedrin radnor retaliates
18 valeron versus chlora
19 to the rescue
20 the first universe is mapped
21 dunark takes a hand
22 trapping the intellectuals
23 the long, long ride
