Casey Wilson has booked a guest role on How I Met Your Mother Season 8.

The Happy Endings actress will appear opposite Keegan-Michael Key on the May 13 finale, stopping by the CBS sitcom as one half of a couple that is having dinner at the same restaurant as Robin and Barney.

It's not much to go on, of course.

But it's fun to speculate on what these roles could mean, right?

Vulture first broke this HIMYM casting news.

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