It's situations like this that make you wonder: what is the back story? Is there even one?

What could possess a man, anyone really, to beat and choke a woman until she loses consciousness?

But that is what 32-year-old, Shaun Dus of Pittsfield is accused of doing.

Police say that Dus beat and choked an unidentified woman, whom he did know, until she was unconscious and then broke into her Stephentown home.

The man was arrested Saturday morning and does face numerous charges including assault and strangulation.

The stuff he's accused of is bad, for sure, but, I'm almost more angered by the smirk in his mugshot—after all he's alleged to have done.

Shaun Dus Mugshot, Pittsfield PD and WTEN