A Private Affair (2022)

S1E7 The demon of vengeance

Marina finds the killer's mask hidden in Pablo's car and confronts him about it. Their confrontation escalates, leading to a crash against a tree. When Marina regains consciousness two days later, she sees Pablo beside her, insisting on his innocence. With the mask in hand, they realize that only one person could have created it. However, that individual resides in the Cies, and to get to him, they will require Castaño's assistance.