The siblings of the Fitzgerald family must decide if the dad who abandoned them 20 years ago can come home for Christmas. Can the big Irish clan get past their grievances to be a family again?
| Actor | Role |
|---|---|
 Kerry BishéSharon Fitzgerald | Sharon Fitzgerald |
 Edward BurnsGerry Fitzgerald | Gerry Fitzgerald |
 Heather BurnsErin Fitzgerald | Erin Fitzgerald |
| MMarsha DietleinDottie Fitzgerald | Dottie Fitzgerald |
 Caitlin FitzGeraldConnie Fitzgerald | Connie Fitzgerald |
 Anita GilletteRosie Fitzgerald | Rosie Fitzgerald |
 Tom GuiryCyril Fitzgerald | Cyril Fitzgerald |
 Ed LauterJim "Big Jim" Fitzgerald | Jim "Big Jim" Fitzgerald |
 Michael McGloneQuinn Fitzgerald | Quinn Fitzgerald |
 Nick SandowCorey | Corey |
 Noah EmmerichFrancis "FX" Xavier | Francis "FX" Xavier |
 Connie BrittonNora | Nora |
 Joyce Van PattenMrs. McGowan | Mrs. McGowan |
 Dara ColemanJJ | JJ |
 Brian d'Arcy JamesSkippy | Skippy |
 Malachy McCourtFather | Father |
 Daniella PinedaAbbie | Abbie |