Actor Chris O'Dowd has said he feels "privileged" to be a part of Baby It's Cold Outside, a new, three-part Christmas podcast about a homeless father that launches next week.

The drama, from Murdered by My Boyfriend writer Regina Moriarty, sees O'Dowd cast opposite Shameless star Anne-Marie Duff and The Crown's Billy Jenkins.

Made in association with UK homeless charity Crisis, Baby It's Cold Outside tells the story of Ed (O'Dowd), "a recently separated father trying to spend the perfect Christmas Eve with his nine-year-old son George (Jenkins), whilst struggling to hide the truth of his circumstances". Duff plays Ed's estranged wife, Sam. 

Baby It's Cold Outside launches on December 17, with a trailer now available on iTunes.

"I feel privileged to be part of this story, one which reminds us how close homelessness is to each of us," said O'Dowd.

"Everyone needs and deserves a home, and until we make it our urgent business to ensure that everyone has one, we can't even pretend to be a civilised society," said writer Moriarty.

"It would be great if everyone could do something to help, however small."

It has also just been announced that O'Dowd's comedy-drama crime series Get Shorty has been renewed for a third season.