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AIRED ON 12/2/2013
Season 9 : Episode 12
AIRS ON 12/16/2013
Season 9 : Episode 13
NEXT EPISODE AIRS 12/16/2013 AT 8PM ON CBS
Barney becomes fixated on having his rehearsal dinner at a laser tag arena, much to Robin’s dismay. Meanwhile, Ted doesn’t come through on a promise, which aggravates Lily.
In a flashback episode, the gang ponders the future of the Ted, Robin and Barney love triangle, while Ted gets a call from an old "friend". Meanwhile, Barney accepts a series of challenges from Lily and Robin.
On their way to Long Island for their wedding weekend, Robin and Barney come across a startling family discovery. Meanwhile, Marshall sees something online that changes the course of his …