There's something oddly callow about Liz Garbus' adaptation of Robert Kolker's non-fiction book Lost Girls. Adaptation is always tricky, and Kolker's story tries to examine the larger consequences of a case surrounding the disappearances and deaths of five sex workers in Long Island. A movie, especially one that took the route of a feature adaptation rather than a docu-series, would have to find a way to focus its narrative, but Lost Girls always seems to miss the bigger picture. While it has an interesting angle about one mother's anger and determination to find out …