In the middle of the night, an injured man was found in the park. Someone attacked him and bit into his throat. With their teeth! Damn, I must be dreaming. This pit bull in human form literally tore a chunk out of his throat, and now they're fighting for his life in the ICU. As my lovely nurse whispered to me, the poor guy probably won't live for more than a day.
But in general, what can be done today? Look for clues, or execute the obvious psycho.