Guest Stars Samantha Smith as Mary Winchester David Haydn-Jones as Arthur Ketch Adam Fergus as Michael "Mick" Davies Rick Worthy as Alpha Vampire Aaron Douglas as Pierce Moncrieff Sunita Prasad as Serena Colman Co Starring Alex Duncan as Kris Kett Turton as Alton Morehead Stew McLean as McGillicuddy Andrew Tkach as Nest Leader