When you think of holiday movies, the more cheery and optimistic ones first come to mind. But this year, we’ve gotten ones that are a bit different. Stranger Things‘ David Harbour headlines Violent Night. This year, Netflix also released a comedic mystery, Who Killed Santa? A Murderville Murder Mystery.

The around 50-minute Christmas special is part of Netflix series, Murderville. In each episode, a guest star plays a rookie detective but they are not given a script beforehand, allowing for improvisation. Their goal is to figure out who the true killer is.

Krister Johnson, who developed the original, serves as showrunner and writer on the special. Other writers include Owen Burke, Marina Cockenberg, and Kerry O’Neill. Executive producers are Will Arnett, Marc Forman, Jonathan Stern, Peter Principato, and Brian Steinberg.

So are there any stars in Who Killed Santa? that are from the original series? Who is new? We’ve got the answer for you below!

All of the cast members named below, except for the celebrity guest stars, reprise their roles from Murderville. We provided the full cast list below:

Who Killed Santa? A Murderville Murder Mystery sees Detective Terry Seattle (Arnett) back and needs the help of his two celebrity guest stars, Jason Bateman and Maya Rudolph. Their mission is to figure out who killed Santa, and the two celeb guests don’t have a script. So they have to use their smarts to find out who the killer is.

Who Killed Santa? A Murderville Murder Mystery is now streaming on Netflix.