The Fear (UK)

It's actually 4 episodes. A fun, exciting series about a businessman who used to be a gang leader but now does business properly. However, his son makes agreements with inhumanly cruel Albanian human traffickers, which he does not keep. Then the trouble begins. At that moment, his father gets more and more amnesia and hallucinations. It turns out he has Alzheimer's. You see the misery the disease brings, he always gets himself into trouble because he doesn't know what he's doing. And how the cruel gang takes revenge and gains more and more control over everything.