Homicide Hunter: Lt Joe Kenda (2011)

S3E9 My, My, Merry Christmas

On Christmas Day, the cheerful restaurant employee Donald Ott is discovered murdered, leaving his friends baffled as they insist he had no known adversaries. However, Lt. Joe Kenda uncovers a relative with a troubling criminal background, suggesting he may possess crucial information that could unravel the mystery surrounding Donald's untimely death.