In some countries (e.g., Germany, France, UK), Şahsiyet is available on Amazon Prime Video. While this is not “free” (requires Prime subscription), Amazon frequently offers a for new users. You could sign up for the trial, binge the entire series, and cancel—effectively watching Episode 1 for free.
If you're interested in watching more of Çağatay Ulusoy or similar Turkish dramas, consider exploring other series like "Medcezir," "20 Minutes," or "The Guy Who Played Dumbledore."
The story follows Agâh Beyoğlu (Bilginer), a 65-year-old retired court clerk living a solitary life in Istanbul. His world is turned upside down when he is diagnosed with early-stage Alzheimer’s. Rather than succumbing to despair, Agâh realizes that his impending memory loss is a "get out of jail free card." If he can’t remember his crimes, he can’t feel guilt—and neither can the law truly punish him. This realization sparks a dormant desire for vigilante justice against criminals from his past.