Re: How I Met Your Mother: Barney and... (Spoilers ahead...)
Guy Gardener wrote:
why would he put the box back?
It's Barney, he's got a reason for everything. I'm betting that Robin is ready to call off the wedding, and Barney will show up with the locket and have a plausable and somewhat charming reason for the whole thing.
Give each other $10, put it on Underhill.