 Who does Jig suspect wants them dead, and let loose the vapor snakes?
The Blue Behemoth By LEIGH BRACKETT Shannon's Imperial Circus was a jinxed space-carny leased for a mysterious tour of the inner worlds. It made a one-night pitch on a Venusian swamp-town—to find that death stalked it from the jungle in a tiny ball of flame. I've wet-nursed Shannon's Imperial Circus around the Triangle for eleven years, and I know. It was Gow, our zoo-man—a big, ugly son-of-a-gun from a Terran colony on Mercury. The only other one on the Triangle belongs to Savitt Brothers, and she's much smaller than Gertrude."
 Beamish, because he knows they cut him a bad deal.
 Beamish and the crew. The circus has not been doing well, and Beamish may be unhappy with the deal they cut.  The crew. They resent how little money they make.  Beamish, because he knows they cut him a bad deal.  Gow. He didn't call back the snakes as they attacked them, and is beside himself because of Gertrude.