If there's such a thing as perfect casting, I reckon that Prisoners' Wives (BBC 1, 9pm) has hit the jackpot with Emma Rigby as Gemma, the girl standing by her not-very-nice hubby, writes Sian Brewis.

Everything about her screams bewildered poor-little-rich-girl – her tiny frame, china doll face and big eyes, made for staring helplessly into the camera and welling up with tears.

There's a fair bit of that.

She cries and screams as armed police smash into their perfect home and wrestle husband Steve to the floor.

She cries as she walks through the prison doors – HMP Highcross (my husband cries when he goes near the Highcross too, ho ho) – suffering the indignity of having to be strip- searched and mix with women whose men are all bad lads.

Her Steve's innocent, after all.

"It's all a mistake," she sobs to anyone who will listen.

Except, except... as hard case Francesca (husband doing an 18-year stretch for drugs trafficking) tells her: "If he didn't get bail, someone somewhere thinks he's done something."

As the net tightens around Steve, and pregnant Gemma even finds what could be a murder weapon hidden away, she's still wailing "burrahluvim!"

It's a polished production, this, with its eye clearly on the gaping hole left by the likes of Bad Girls and Cutting It – gritty dramas with a heart which were quickly addictive viewing.

There are nice sub-plots too: the glamourpuss Frannie, whose armour is leopardprint shirts, high heels and a convertible, but whose neighbours ignore her; the little boy whose dad's bedtime stories are filmed on a DVD in prison, a nice turn from Andrew Tiernan as the world-weary DS Hunter, who's not going to give Gemma an easy time, and her creepy workmate, who takes to calling round at her house in the evening, to 'see how she is'.

"I'll do my utmost to protect you," he leers, before shoving an aubergine and ricotta lasagne into her unwilling hands.

In The Fixer (BBC 2, 9pm), no-nonsense Alex Polizzi – once the Hotel Inspector – turns up and does with businesses what she did with hotels.

Lots of strict, sound advice and swearing, tempered with a bright smile and a "darling" at the end of it.

Last night, a bridalwear boutique in Kettering that looked more like a charity shop was given the treatment.

Mum and daughters ran it and spent more time bickering than selling.

One row ended with the mum yelling: "If I have a stroke, at least I will get a rest in bed!"