Who likes to slosh around in the surf with a thoughtful, pensive look on her face, and then picks up people who happen to be walking by and puts them into her raincoat pocket. Is the ghost mermaid here to resuscitate a buried Wold War II memory? Something to do with a kid who hid in the basement to avoid being carted away to a Nazi concentration camp? Okay, but what’s this to do with a giant phantom who looks like Kristin Scott Thomas?