THE LAST WITNESS is a political thriller based on the harrowing true events of the Katyn Massacre in Spring 1940. In post-WW2 England, ambitious journalist Stephen Underwood (Alex Pettyfer) comes across a disturbing spate of suicides by Polish soldiers. Sensing a story, his first port of call is Colonel Janusz Pietrowski, a Liaison Officer for the re-settlement of Polish troops under British command, but the meeting leaves Stephen unsettled and from here his investigation escalates as he finds himself embroiled in a dangerous, multi-layered conspiracy concerning the execution of 22,000 Polish military and civilians by Stalin's secret police.