Ho ho ho! Ohhhhh Santa. Haha, shipwreck! Boing!

It's Christmas, and in celebration, the boys bring in the all-knowing Santa Claus (John Richardson) to help with their most recent case - Frank Sermon, found dead with a fire poker in his chest. Luckily, Santa, as well as his shadow Krampus, were familiar with the victim - as was Mark Harmon, star of NCIS, and current owner of Frank's vocal chords.

Get your detective brains on for this very special Christmas episode of Killed to Death.