" There's a shark. Following the ship.'

I tried not to look, but couldn't help it. I saw a flash of dirty white down in the green. We walked back to the deck chairs.

Walter, we'll have to wait. Till the moon comes up.'

I guess we better have a moon.'

I want to see that fin. That black fin. Cutting the water in the moonlight. "

― James M. Cain , Double Indemnity