I've seen this movie three times now and it never loses its edge. Christenssen puts "whiny and self-pitying" to good use in this mesmerising true tale of how deceit quickly spirals out of control. It all starts with one or two people feeling something's not quite right, before there are questions, investigations and awkward conference calls. There's a good dose of humour here too, partly from Steve Zahn but also from the way Glass's lies are exposed.
A brilliant film, unencumbered by attempts to explore Glass's psyche. He was a liar who got found out. Simples.