The Fall of Sirius Black

You're on the run.
You're being hunted.
You're cold and hungry.
You're alone.
You're terrorizing schoolchildren.
You're obsessed with a rat.
Life can't get any worse.

Poor Sirius Black. . .

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EDIT 5/9
Added beard.

A little clarification may be needed. This is the scene in PoA when Sirius has sneaked into the Gryffindor tower and scares Ron in his bed while looking for Scabbers. That "thing" in his hand may look like a wand or a cane but its actually a knife. If I think of a way to make it more obvious, I'll change it. Cool.