Twists and turns feel like trying to walk up the down escalator

Watching new thriller In Flight this week (Channel 4, Tues-Thurs, 9pm) reminded me of walking up a down escalator.

- Philip Cunnington on In Flight

Every time you thought you'd finally fought your way to the top, another step appeared from the plot room down below and the whole trudge started again.

That's not to say you didn't appreciate the workout this twisty-turny little thriller gave your faculties, it's just that at times it felt like you weren't getting anywhere.

Katherine Kelly stars as Jo Conran, a flight attendant with a messy personal life.

Most protagonists in dramas have messy personal lives these days, it's just that Jo's seems a particular tangle.

Having fallen out with her teenage son Sonny (Harry Cadby) over his relationship with his dad, and her ex-partner, she has to step up when his travelling overseas goes horrendously pear-shaped and he winds up in jail for killing a man in a Bulgarian bar fight.

Then there's her affair with married customs officer Dom (Ashley Thomas) - he's gone back to his wife and kids, while she still pines after him.

Add in turning a blind eye to a flight crew colleague's layover, well, layovers and Jo has a lot on her plate.