Poignant and moving tearjerker starring a brilliant John Cusack as a sci-fi author, recently widowed, who adopts a troubled but imaginative 6-year-old boy (Bobby Coleman) who believes he's actually from Mars. Directed by Menno Meyjes and written by Seth Bass and Jonathan Tolins, who adapted the autobiographical novel by David Gerrold, a sci-fi writer who penned the famous "Trouble with Tribbles" episode of "Star Trek."