Invisibles (2010)

The Spanish policeman Daniel Vargas has been commissioned to chase Andrés Molina, a fugitive scientist who escaped to Turkey during the investigation of the strange death of his Polish girlfriend. Molina vanished without leaving a single trace and all suggests that it will be barely impossible to find him. But in Istanbul lives Germán, Daniel's older brother, dedicated to unclear businesses and very connected with the spy nets. If Daniel finds him and German helps him using his contacts, maybe he will be able to bring Molina back to Spain. The only problem is that maybe German isn't either an easy prey to catch.