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Unreported World 7.35pm, Channel 4 With the exception of North Korea, no country is as paranoid and impenetrable as Burma – and even by Burmese standards, the regime's ongoing war against the Karen people of the country's east is carefully hidden from scrutiny. This film goes some way to rectifying that, crossing into Burma from Thailand with the assistance of the Karen National Liberation Army. The footage of recent refugees is as moving and depressing, as such things always are, but the story as a whole would have more impact with further development of the Karen characters. Ashes to Ashes 9pm, BBC1 Funk to funky, we've made it to the final episode, and Alex is no longer prepared to trust Hunt's assurances that he's a good copper. Instead, she heads to a farmhouse that may, or may not, be Sam Tyler's final resting place. Back at base, the children have to look after themselves, which means Ray, Chris and Shaz plan a sting operation – a recipe for trouble? Overall, it's probably just as well that Ashes To Ashes is bowing out, but the final few episodes have been excellent, principally because darker storylines have recalled the series' Life On Mars roots. The Mentalist 9pm, Five When Cho's old gang member ally is found murdered, he and Jane revisit his underworld haunts: Cho with a gun, Jane with his Derren Brown-style hijinks and smart-ass mouth. "Your obsession with eating is an infantile attempt to cope with the persistent anxiety you feel," he tells a large crime boss, apropos of nothing. You'd think a guy like that would be a liability, but next thing, he's hypnotising henchmen into putting their guns down. "Let's all breathe deeply," he croons. Lost 9pm, Sky1 The subtitle for tonight's penultimate episode is What They Died For – could we actually be in danger of getting some answers? Followed by Lost: The End Is Nigh at 10pm with Iain Lee talking to Michael Emerson (Ben), Jorge Garcia (Hurley) and Emilie de Ravin (Claire); and Lost: The Greatest Scenes at 10.30pm. It's the two-and-a-half-hour finale next week: grab your frozen donkey wheel and hold on tight … Brotherhood 10pm, FX The series about Irish-American brothers Tommy (Jason Clarke)and Michael (Jason Isaacs) – one of whom works in politics, the other as a gangster – returns for its third season. Michael is still in the grip of mental instability, Tommy reduced to the role of Speaker's errand boy and their mother Rose trying to conceal her own illness. Early on, Michael shoots up his TV set when he sees his estranged brother on the news. It's perhaps an overall lack of scenes like this which meant that Brotherhood was similarly removed from our screens after this season. High quality drama but a little downbeat and unrelieved. Alexis Arquette – She's My Brother 11.30pm, More4 Anyone who has seen the documentary Tarnation – a grainy account of one man's coming to terms with his sexuality – will immediately recognise its influence on this feature-length doc. The difference being that this takes as its subject Alexis Arquette, of the Arquette acting dynasty, members of which pop in and out here, and appear in home movie footage. This follows Alexis's transgender journey, as a complicated situation is made more complex by the camera, and the scrutiny of US gossip magazines with which she has a predictably love/hate relationship.