Watch Downton Abbey, Season 3: A Scene from Episode 4 on PBS. See more from Masterpiece.

Check out this sneak peek clip of from “Downton Abbey” Season 3 episode 4, airing next Sunday, Jan. 27. Sybil has gone into labor and is struggling with the idea of having to christen the baby Catholic at Downton (since she and Tom can’t go back to Ireland). She knows that it’s going to cause some problems in their family, but she wants to do it because it’s important to Tom.

Luckily, big sister Mary is on the case. She’s going to fight for Sybil’s wishes, no matter what Travers the vicar (or their father) might say about it. Leave it to Lady Mary, she’s a superhero.

Meanwhile, Thomas is showing James how to properly wind a clock, which is not a euphemism — though Thomas probably wishes it was.

“Downton Abbey” airs Sunday nights at 9 p.m. ET/PT on PBS.

Posted by:Andrea Reiher

TV critic by way of law school, Andrea Reiher enjoys everything from highbrow drama to clever comedy to the best reality TV has to offer. Her TV heroes include CJ Cregg, Spencer Hastings, Diane Lockhart, Juliet O'Hara and Buffy Summers. TV words to live by: "I'm a slayer, ask me how."