As previois Bones spoilers have revealed, a couple will get married on the May 20 season finale; while producer Stephen Nathan says developments between Breenan and Booth will be “the next logical emotional step after what happened in the 100th.”

Before we get to those mysteries, however, the show will air a new episode this Thursday.

It focuses on the Gravedigger's trial, as Brennan and Angela testify and the remains of a child may provide evidence that puts this killer away.

Watch the official promo for "The Boy with the Answer" and get a look at scenes from it via the following photos.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.