Tuesday 12 August In Flight Channel 4, 9pm; all episodes available from today One of the keys to writing great drama is to present your protagonist with an early problem. This nail-biting six-part thriller opens with a nightmare – and then another. Flight attendant Jo (Katherine Kelly) receives a call in the middle of the night from her 19-year-old son, Sonny (Harry Cadby). He has been involved in a bar fight in Bulgaria, which has led to him being charged with the murder of a local mobster. That’s the first problem. The second arrives three months later, when mysterious gangster...