Tripping the Rift

To Ebay or not to Ebay (3x3)

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Strange things are going on aboard the Jupiter 42. Personal items along with parts of the ship are disappearing. Every one’s a suspect but the finger of guilt is eventually aimed squarely at Gus who has a gambling debt and might be selling the stuff on Ebay to get out of the hole. Question: can a robot with cement shoes drown?