S1·E19 The Glass Fortress

Golgo is deployed on a covert mission in England to locate and kill a reclusive millionaire named Vargas Walton who has been "keeping" women as his guests in his estate located at an artificial island, ready to have healty organs from them to be harvested and kept ready for donors while using the funds from organ donations to finance several terrorist groups. The millionaire is protected by high-tech bulletproof glass, making an assassination attempt from the sea or air nearly impossible coupled with an ex-expert Olympic shooter named J.J. as the head of his bodyguard detail.