There's a small but distinct trend for films with deliberately vague titles - movies called things like 'Somewhere' and 'Anonymous' and 'Tch, Whateva' (*we may have made one of these up). Unknown, though, relates to the predicament of Liam Neeson's car-crash victim, who wakes from his accident in Berlin to discover that his wife doesn't know him and a whole lot of Europeans want him dead. Do those Europeans never learn? That was one of the questions we didn't ask Neeson when we met up with him to discuss his character's very particular set of problems. We also chatted to his lovely co-stars Diane Kruger and January Jones, as well as director Jeune Collet-Serra and producer/titan Joel Silver.