Psion has two major characters, Cat and Jule ta'Ming. Although most of the action and exposition is focused on Cat, Jule ta'Ming serves as a example of how even wealth and privilege cannot protect a person from prejudice.

Jule has two psi talents: She is both telekinetic and empathic. Discovery of these "shameful" talents, which indicate less than pure blood, causes Jule's estrangement from her wealthy and powerful family. The family pays her to go away and stay away, so she has wealth without power or position.

Ultimately, Jule uses her money to fund the psi experiments of Dr. Siebeling's Sakasse Institute. Jule's empathic power allows her to make contact with the feral Cat and calm him down. Cat develops a crush on Jule and stays with the Institute both to be near Jule and because the alternative is a return to his marginal existence in Oldcity.

Cat's...