Guest Stars Shazad Latif as Dr. Henry Jekyll Samuel Barnett as Renfield Christian Camargo as Dr. Alexander Sweet Jessica Barden as Justine Perdita Weeks as Catriona Hartdegen Co Starring Casper Allpress as Jack Pandora Colin as Maggie / Marjorie Kieron Duffy as Boy Familiar #2 Sophie Meade as Teenage Singing Girl