Following on from Thursday’s A cappella-themed instalment Bones returns this week with “The Secret in the Service.” The episode sees Booth offering his expertise to the Secret Service when an agent is found murdered on the eve of a presidential visit to the area. However Booth soon discovers that not only is former colleague Brandt Walker (guest star Michael Gaston) reluctant to accept his assistance, but the killer may just be someone on Walker’s own detail. Exposing the murderer and protecting the president’s life has never looked so daunting..
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