The series is based on the novel of the same name by Jenni Bayliss.
Production on the limited holiday series has begun in and around Dublin, Ireland.
But when Delilah unexpectedly shows up on her doorstep literally Kate and Macs life and holiday season get upended.
Mae Whitman, Mary McDonnell and Jane SeymourGetty Images/Charles Bush
The Twelve Dates of Christmasis from Dynamic Television.
The series is produced by John Wallace.
