American Fable is ambitious, maybe too much so sometimes, but there's an intense pleasure in the boldness of the film's style.
"I'm not human," little Dennis says at one point in "Martian Child." So he believes. The lonely orphan has convinced himself that he was not abandoned by his parents, but arrived here from Mars. To protect himself against the sun, he walks around inside a cardboard box with a slit cut for his eyes and wears a weight belt around his waist to keep himself from drifting up into the sky. At no point during the film does anyone take mercy on the kid and explain that the sun is much more pitiless on Mars, and the gravity much lower.
Still, this isn't a film about planetary science but about love. Dennis attracts the attention of a lonely science-fiction writer named David (John Cusack), a recent widower who can't get the cardboard box out of his mind and goes back to the orphanage one day with some suntan cream. Eventually, almost against his own will, he asks Dennis to come home with him for a test run and decides to adopt him. The movie is the sentimental, very sentimental, story of how that goes.
Few actors in the right role can be sweeter or more lovable than John Cusack, and he is those things almost to a fault in "Martian Child," which is so bland and safe that it might appeal more directly to children than adults. Cusack plays another widower in his much more affecting movie "Grace is Gone," which opens Dec. 7, and you might wonder why he took two fairly similar roles so closely together.
This is not to say "Martian Child" lacks good qualities. Young Bobby Coleman plays Dennis as consistent, stubborn and suspicious, and Amanda Peet has a warm if predictable role as the woman in David's life who starts out as best friend and ends up where female best friends often do, in his arms. But it is Joan Cusack, John's real-life sister playing his movie sister, whose contribution is most welcome, because she brings a little sassiness to a film that threatens to drown in lachrymosity.
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