English subtitle tested and verified on release:
Marco.Polo.One.Hundred.Eyes.2015.1080p.WEBRip.x264.AAC5.1-[YTS.MX].eng
It can also be used for other releases, just rename it!
The episode shows the origin of Hundred Eyes and how his relationship with Kublai Khan and Prince Jingim came about. Before losing his sight and before pledging his service to Kublai Khan, who was Hundred Eyes who became a deadly assassin and trained Marco Polo.