"The Hole in the Heart" is a pretty significant episode for a number of reasons. One of them is the death of Vincent Nigel-Murray. He was my favorite squintern, so I'll be sad to see him go. This plethora of random knowledge was always entertaining and he had an undeniable charm. It's also good to know that Vincent was killed for a good reason since his actor, Ryan Cartwright, is on Alphas, which Syfy picked up. The episode handles the situation well, dealing with the emotional ups and down, as well as resolving the Broadsky plot.
But perhaps greater than all this is the implication that Brennan and Booth slept together. All we see is a grieving Brennan lay on top of Booth, and she later tells Angela that she got into bed with Booth and possibly something more happened. Brennan and Booth give each other a bunch of looks at the end of the episode, but there is not definitive answer. The dialogue is written ambiguously for a reason, to get fans interested and questioning. I don't want to get negative since this is the closest we've seen to resolving 6 seasons of UST; however, this better not be another fake-out.
Score: 9.2/10