"Grandma Dory" has passed away and left her two grandsons some money so that they can take a trip to Poland and see where she grew up amidst the Nazi invasion and subsequent holocaust. These two are cousins. "David" (Jesse Eisenberg) is a bit of a shy, geeky, type who lives in New York with his wife and child. "Banji" (Kieran Culkin) is quite the opposite. A free spirited, thinking and speaking individual who cares little for what anyone else thinks about him. The pair clearly love each other, but the behaviour of the latter continues to rattle his travelling companion, especially when they meet up with the other members of their touring party in Warsaw. What now ensues is quite a testament to both Eisenberg's vision as a writer/director but also to the inspired casting of Culkin. He is the kind of holiday companion I'd cheerfully have killed with a rusty harpoon. Loud, brash, opinionated and sometimes borderline cruel as he imposes himself on the group swearing as he goes. Gradually, though, we discover that both men have shields up; both are dealing with some fairly deep psychological issues in their own way and even ought these may clash, there is still far more fundamentally connecting them that not. There are ample opportunities to see the sights of Warsaw, and there is an haunting few minutes at the Majdanek camp where shoes, thousands and thousands of shoes, make you shiver. It's potent and it's often funny, darkly so, and in many ways it slots nicely into the recent panoply of dramas about the fascination by younger generations in the horror of war that those who endured actually want to get past and forget. It also shines a light on the whole business of tourism around these monuments, and does make it quite clear that sometimes these trips can become a statistical box-ticking exercise, especially for Americans, who want to say they've "done" that. An architectural monument equivalent of a safari "big five". In the end I found "Benji" to be a vulnerable but fundamentally selfish and unlikeable character - but I bet there are many reading this who profoundly disagree. That's proof that these two did their job well and I'd recommend you go see it in a cinema for a couple of powerful and characterful performances.