More Durable Than You Think

"For the first time since he and Emma returned to Storybrooke, Killian Jones felt helpless. What bothered him even more was that what was troubling him wasn't a formidable foe, but a little baby boy." Killian and Emma are put on babysitting duty. As it turns out, both want to have kids someday (after David gets past his overprotective daddy mode-ness).