Kaylee Hall was a Starfleet Officer during the 24th century.

By 2372 she was serving in Starfleet JAG and held the rank of Vice Admiral, leading the department Criminal Investigation Division.

That same year she recruited Christoffer Williams to covertly gather evidence of Roger Deict's treasounous activities.

She was actually an agent of Section 31 and putting in place an operation to make the Tal Shiar believe Deict was not a double agent after he was on Starfleet Intelligence mission on Romulus the previous year.  While it resulted in his execution, decades of false informtationhed fed the Romulans remained intact.

She over turned Seff O'Rourke's conviction of negligence of command in 2376.

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