The Flash has followed some boomerangs that stole necklaces and took them over the ocean. At first he suspects Rear-Admiral Pearlsnatch, but once he realizes the boomerangs are headed for Aussieland, the fiendish plot – and its clever mastermind – become apparent. It’s Buck-Private Didgeridoo! Only he could craft a plot this fiendish.

Obviously we’re in Australia, since there’s a churlish ewok-ish eucalyptus junkie in the first panel, looking for a fix in the “simulated outback plain.” Of course the simulated outback plain holds a genuine lair fancy, as we see in the third panel.

Note also the chairarms and the ashtray: blimey, the man knew how to accessorize.