How did Jack feel about Rebecca forgetting his birthday?
That was a key concern on This Is Us Season 1 Episode 12 as her triplets' due date approached.
Meanwhile on this hit NBC drama series, Dr. K struggled to cope with the loss of his wife, but who showed up to support him?
Also, the firefighter who brought Randall to the hospital tried to save his marriage.
Use the video above to watch This Is Us online to get caught up with the latest developments for the family as we got the truth about one of the biggest mysteries.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.