Why is this case considered difficult?
Okay, difficult for law enforcement to obtain evidence. That I can understand.
But: John put JB to bed. John found her body, which was probably in the freezer rather than the wine cellar (I guess the freezer was turned off, but it was still cold. I'm also pretty sure that Patsy almost never went into the basement even though her paintbrush and paints were stored in the basement.) John also obviously composed the ransom note. It was all about HIM. It was a big ego trip for HIM.
Plus John framed Patsy and to a lesser degree, Burke. And lastly, John had motive to silence JB: the medical examiners report showed: prior and prolonged sexual abuse.
And some reports that John's older daughter from his first marriage, who was named Elizabeth, also accused John of sexual abuse.
That's what I don't understand why it's considered difficult for the general public to solve. It's pretty obvious.
Talk about sexism and bias: who cares if Patsy wears the same outfit twice.
Personally, I think John hired someone, such as Michael Helgoth, to do the killing. I guess John gave Patsy a sedative so that she would sleep soundly at night.
This case is pretty obvious.