[john in missouri]

2. However, using Occam's Razor the most likely explanation is Chandra Levy was the victim of a deranged predator.

Occam's Razor applies quite well in matters of philosophy and science, such as the question of whether God exists. However, in matters such as this one, a principle from Agatha Christie is much more apropos:

If the solution to a crime appears obvious, it is often because somebody has engineered it to appear so.

[Belial]

However, in matters such as this one, a principle from Agatha Christie is much more apropos:

Except that Agatha Christie is fiction, of course.

[uncbob]

Agatha Christie is much more apropos:

Real life murders are RARELY like those in works of fiction

[Mad_Tom_Rackham]

If the solution to a crime appears obvious, it is often because somebody has engineered it to appear so.

Yes.