The second in an occasional series of two-part food-travel-lifestyle documentaries, Korean Cold Noodle Rhapsody lives up to its promise to deliver a history of Korea through a bowl of noodles. It’s rhapsodic, too, especially in the enjoyment derived by chef and television host Paik Jong-won from each helping of Pyongyang naengmyeon , Jeju naengmyeon and other varieties he samples as he travels the country, from the south almost up to the closed border in the north. And it’s there that this simple soul food’s spiritual home appears to lie (clue: “Pyongyang”). Touchingly, former refugees from the Hermit Kingdom – some still desperate for reunification – pine for their homeland as they dine, sharing memories and regrets as they slurp with gusto. Food critics also weigh in with their assessment of a staple comestible “filled with history and meaning”, which, amazingly for all noodle novices, can be profoundly affected by the weather on the day the naengmyeon (always freshly prepared) is made. Who knew that humidity can affect the preparation of the dough? Meanwhile, records show that royal noodle approval came courtesy of King Gojong in the 19th century, Joseon-era (1392–1897) literary scholars extolled naengmyeon ’s delights and that in the 1950s (resurrected in monochrome footage and photographs) a prototype Deliveroo was in business, feeding Seoul via bicycle courier. Today, young urban devotees are discovering a creation whose “beauty is in the lack of flavour”, however bizarre that may sound, extending the reach of this “new” craze ever further with traction from Instagram. Novel styles continue to appear – to the horror of vegetarians, including live octopus – but it is the power of naengmyeon as a reminder of bygone days that resonates most deeply. Particularly with those homesick seniors who dream of reunification by noodle. The course of true crime Doc Martin, it seems, has finally developed a bedside manner of sorts, albeit in an unlikely setting. In the unsettling, four-part second series of Manhunt (BBC First, via Now TV and myTV Super, all episodes available on November 26), Martin Clunes reprises his role as real-life Metropolitan Police officer Colin Sutton, whose sympathetic, easy-going nature disguises an unwavering appetite for justice. The case this time involves the heinous crimes of the so-called Night Stalker, who terrorised parts of London from 1992 to 2009 by raping or sexually assaulting elderly women in their homes. That makes the series less than an easy watch – even more so when it seems administrative oversights kept the offender at large for years after he should have been apprehended. Despite the police-station-based scenes of operational planning and the tedium of all-night stakeouts when nothing happens, the story develops into a stealthy thriller, creeping up on the viewer as the tense finale approaches. Not all detective shows require shoot-outs and explosions to make a big impression.