David Marin risks his career to defend Wade Trask, a scientist being tried for sedition, but when Trask switches their brains, Marin finds himself branded an enemy of the state. There is also a master robot named "The Brain" and earth is ruled by a "Great Judge" as well.

Find out more for yourself.

A bit about A.E. van Vogt (who created his own name so to speak).
https://en.wikipedia.org/wiki/A._E._van_Vogt.

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