CHIN's

It's Christmas time and Monica tries tipping with cookies, rather than cash, with mixed results. Phoebe tries to track down her real father. And Chandler and Joey wait too late to shop for presents.

James discovers Gary's secret. Ray learns some troubling news about Keith.

Athena and the 118 race to save lives after a drunk driver causes a deadly pile-up on the freeway. Meanwhile, Maddie goes into labor and Hen and Karen are devastated as they prepare their foster daughter, Nia, to be reunited with her birth mother.

The 118 responds to debris from a meteor shower crashing into an apartment building and a deadly fire caused by a hazardous waste truck crash inside a tunnel. Meanwhile, Hen struggles with guilt over her ambulance accident, Bobby introduces Eddie to an old friend to help with his anger and Maddie receives an urgent call for help.

Hen relives her evolution into the firefighter she is today as she recalls the first times she met Chimney and Athena.

Chloe and Ella investigate a mini-golf murder. Lucifer, Michael, Amenadiel and Linda prepare for the holiest of family dinners.

Lucifer's so-called epiphany has Chloe worried, but it's his physical transformation that's really freaking her out. Also, Maze gives Eve a pep talk.