Stupidity: The experienced cop Pullman enters the house of the well-known badass villain with her partner only, without any more backup. After the partner gets killed, Pullman stands free in the middle of the room without any cover - just 'begging' to get shot dead. (00:53:15)
Episode #1.5 - S1-E5
Plot hole: The Jackel visits Norman's hideout where they meticulously craft disassembled rifle parts in a walking boot. The Jackel takes the rifle out to test with nary a sign of the boot. He is nearly captured, escapes, and flees the country while Norman is captured and killed. But the Jackel arrives in Estonia wearing that one-of-a-kind handcrafted boot.