The Palace - [s11e7] The Promise In

: Booth takes an official paper related to the case off a desk, annoying Brennan because it is an important document.

: To catch the killer, Brennan uses a scientific bluff about bioluminescence in the blood to trick him into a confession. [S11E7] The Promise in the Palace

: Booth and Brennan spend much of the episode debating whether or not they should tell their daughter, Christine, about the Tooth Fairy . : Booth takes an official paper related to

The "paper" you might be referring to is likely from the episode's final scene, which features a performed by Booth for Brennan. The Magic Trick Breakdown [S11E7] The Promise in the Palace