Jodie Foster's fiercely intelligent performance drives this disappointing thriller, whose taut, carefully constructed first half is sadly negated by its implausible and worst of all unengaging conclusion. Widowed American airplane-engineer Kyle Pratt (Foster) is returning to New York a week after her husband's death in a fall or was it a suicide leap? from the roof of their Berlin apartment building. She and her 6-year-old, Julia (Marlene Lawston), are booked on a double-decker deluxe jumbo jet, and if Kyle seems high-strung, well, she has a dead husband in the hold and a grief-rattled little girl in her arms. Exhausted, Kyle surrenders to...