Vera Waterhouse appears in "Yanks in the U.K." and "Yanks in the U.K. 2" as one of Doctor Ian Wexler's grad students.
It is eventually determined that she killed him during an argument when she learned that he was turning down a bribe from Roger Frampton that would have allowed their current dig site to be used for a major construction project, as Wexler had discovered that the site actually had genuine archaeological value; Vera was concerned that Frampton would reveal that he had bribed Wexler and thus ruin his reputation, and by extension Vera's.
She attempted to conceal what had happened by burning Ian Wexler's body in a gas leak, but Doctor Temperance Brennan was able to find the truth.