Don't be Fooled
Amara is not his girlfriend, and he can't expect her to feel obligated about updating him.
The investigation about the murders of Muller, Simmons, Aguilar Boones, and possibly Waltz. The Haverville Police Department figured out that the death of Waltz is not of natural cause. The smell of the signature perfume, scent of death, was present in his room when his body was discovered.
The entire police department is puzzled by how the serial killer is not leaving any trace of DNA, despite the gruesome nature of four of the crime scenes. All of them were thinking that there should have been at least a strand of hair. But no, every crime scene was clean.