A movie providing a lot of angles for the viewer to look at is normally a pretty engaging film. "Unknown," however, manages to only confuse the viewer.
Though there is a lot of attention on the story, it's fairly confusing. American researcher Martin Harris (Liam Neeson) and his wife Liz (January Jones) arrive in Berlin for a research summit. As the two arrive at the hotel, Martin realizes he left his briefcase back at the airport and boards another taxi to retrieve it.