The Disappearance of Stacy Peterson: Some Semi-Rhetorical Questions

October 29, Drew Peterson reported his wife Stacy missing. She is his fourth wife. His third wife died under suspicious circumstances; and Stacy’s disappearance led authorities to exhume the ex-wife’s body, and Friday’s autopsy revealed that her “accidental” drowning was, indeed, murder.

Now, let’s assume for a moment that Peterson killed both women: What is the thought process by which, having gotten away with one murder, you would risk a second one when even the mere suspicion of the second murder would probably lead to the exhumation of the first body (right now, it might be easier to prosecute him for killing his ex-wife than for killing Stacy, because there’s physical evidence)? Stupidity? Peterson’s a police sergeant: He knows how investigations work. Arrogance and a sense of invincibility? Even O.J. Simpson waited until after he was acquitted and immune from further criminal prosecution before breaking the law (again) in any major way.