flop overbet

[fathertime]

25 NL
6 max

Villain MP2 (60); 70/30
Hero BB (42)

Villain limps; CO calls; I check in BB KdJc.

flop ksjs4s

I bet dollar; Villain raises to 10; CO folds

Villain, maniacal but with some sense to his madness, could have anything from a monster to a draw to a bluff.

I didn't think folding an option here--villain's range of hands is too broad. And so should I call and bet hard any non-spade turn. Or should I raise him all in on the flop?