Two fellow thieves and a scientist that specialises in gamma radiation. Which, on further explanation, turns out to be the study of how energy ... [Thinking back, how did he put it--] "How energy travels from one source through some kind of material or space."

[Which, on her limited recognition of the higher sciences, sounds remarkably similar to the sort of physics that might govern the barrier. >>]

He's probably smart enough to work out how Malnosso technology works.