'The Magician's Code - Part One' - Season 7, Episode 23
While Marshall is in Atlantic City with Barney, Lily goes into labor, leaving him desperate to make it back to New York before the baby is born. Meanwhile, Ted and Robin try to distract Lily during her painful contractions, on the first part of the one-hour seventh season finale of How I Met Your Mother.
Air Date: May 14th 2012.
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