While known primarily for his extensive acting career, Mark Sheppard started out as a drummer in the late seventies with a slew of European Indie bands including The Television Personalities, Nikki Sudden, Robyn Hitchcock, The Barracudas and the Irish group Light A Big Fire. Coming to the U.S. In the mid-eighties, he recorded with They Eat Their Own and was a founding member of School Of Fish. 

His acting career took of with a starring role in the film In The Name Of The Father and over two decades of television work followed including The X-Files, Firefly, Battlestar Galactica, Leverage, 24, Warehouse 13, White Collar, Doctor Who and 8 seasons (and counting) of the hit CW show Supernatural.

Circumstances have come full circle and for the last two years Mark has been playing extensively across North America with Louden Swain's Saturday Night Special Band.