Guest Stars Jodie McNee as Willa Daniel Caltagirone as Brutus Zaqi Ismail as Philo Peter Hosking as Elder 4 Callie Cooke as Islene Abigail Rice as Elder 1 Rhys Yates as Julius Jakub Laurych as Druid Aaron Pierre as Antonius Oengus MacNamara as Eavan Karl Johnson as Cormac Gerard Monaco as Roman Deserter 2 William Valerián as Finian Ivan Mareš as Slaver Jed O'Hagan as Celt Jennifer Preston as Regni Elder Francene Turner as Celt 2 Rupert Lazarus as Roman Deserter 1 Jay Taylor as Roman Deserter 3