At one point during breakfast Will forks a piece of sausage but after a cut lifts a forkful of eggs to his mouth.
All the victims of Garret Jacob Hobbs are said to match the exact profile of his daughter, down to eye color, but all the victims had brown eyes while Abigail has blue eyes.
At one point, Katz is brushing trace evidence out of a piece of clothing. She is wearing a face shield but her long hair is down, with no net or anything. That is just begging for contamination of the evidence.
Hannibal uses a tissue to prevent leaving fingerprints or DNA on a phone receiver. He punches in the phone number with his bare hand.