Grace Miller is a FBI agent who works in the agency's internal investigations department. She appears in the episode The Loyalty in the Lie, when she is investigating the whereabouts of the missing Seeley Booth, because she considers him to be a primary suspect for the sale of a list with FBI undercover agents, although that list was stolen by her former partner, Richard Bannerman. The team treats her with great reluctance, because she appears to be clearly prejudiced against Seeley. These reservations turn out to be deserved in the next episode (The Brother in the Basement), when it turns out, that Bannerman was her former lover, at which point she becomes a suspect herself. In the end, however, the culprit turns out to be Dr. Benjamin Metzger.
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