Scott & Bailey, Series 4, ITV

Manchester's detective duo are as disaster-prone as ever

When Rachel Bailey (Suranne Jones) told the promotion board at the beginning of this series: “I’m not a liability, I’m a safe pair of hands”, we knew it would be a matter of sitting back and waiting to see in what manner she would heap disgrace upon herself.

Downton Abbey, Series 5, ITV

DOWNTON ABBEY, SERIES 5, ITV On this evidence, there's still plenty of life in Lord Fellowes's beloved national institution

On this evidence, there's still plenty of life in Lord Fellowes's beloved national institution

As unavoidable as death and taxes, as inevitable as the rotation of the seasons, Downton Abbey has created the illusion of time-hallowed permanence in a mere four years. It is often asked how long Julian Fellowes can keep up his script-writing heroics (if it was an American show he'd be marshalling a writing team of dozens), but this opener to series five was so playfully deft and thunderously enjoyable that you'd have to conclude that Downton has become Fellowes's personal fountain of youth.

Cilla, ITV

CILLA, ITV Anodyne biog sanitises showbusiness legend

Anodyne biog sanitises showbusiness legend

With Cilla Black still fighting fit and eminently telly-worthy at 71, it feels a bit odd to find a three-part dramatisation of her life popping up on ITV. Black apparently gave the project her blessing and has hailed Sheridan Smith's performance in the title role, but all this does is to tacitly suggest that it's a fairly harmless piece of entertainment which is unlikely to go poking about in any dark or controversial areas. Team Cilla would surely have had the scheme quashed otherwise.

Gems TV, ITV

GEMS TV, ITV Ambiguous documentary on 'romancing the stones' - or, new ways to retail bargain jewellery

Ambiguous documentary on 'romancing the stones' - or, new ways to retail bargain jewellery

The Bennet family had an issue. Time to get the Austenesque quips out of the way.

The Great War: The People's Story, ITV

THE GREAT WAR: THE PEOPLE'S STORY, ITV More first-person war testimonies from front line and home front

More first-person war testimonies from front line and home front

The best thing about The Great War: The People’s Story is the variety of intonations and accents that reveal the characters of the individuals whose letters, memoirs and diaries are collected in the programme. Last week’s opening episode caught all the gung-ho excitement that followed the declaration of war as men streamed along to join up. This second one brought us something darker, as we moved forward to 1915, with the “machine of death” already reaping its toll.

Billy Connolly's Big Send Off, ITV

BILLY CONNOLLY'S BIG SEND OFF, ITV Big Yin finds that the big adventure is awfully big business. But not that funny

Big Yin finds that the big adventure is awfully big business. But not that funny

How amusing is death? When stand-ups fail to get laughs on stage, they call it dying, because the silence is like the grave. When actors laugh when they’re not supposed to on stage or on camera, it’s called corpsing because it kills the scene. They can do birth, marriage, divorce and illness, but death is the one part of the journey a comedian can’t turn into first-person material. Not even Tommy Cooper, who literally died on stage. But if anyone can find the funny side, it is surely Billy Connolly.

Prey, ITV

PREY, ITV Super Simm shines as wronged cop on the run

Super Simm shines as wronged cop on the run

"Policeman wrongly accused of murder" is possibly not history's most original story idea, but in Prey, writer (and TV debutant) Chris Lunt has turned it into a platform for a skilfully-controlled thriller that keeps your brow sweaty and your breath coming in short panicky gasps. It's greatly assisted by having John Simm playing the lead role of Manchester-based DS Marcus Farrow, since there's nobody better when you want a bit of earthy-but-sincere, with added soulfulness.

Vera, Series 4, ITV

VERA, SERIES 4, ITV Can the canny Geordie sleuth join the pantheon of Great British Detectives?

Can the canny Geordie sleuth join the pantheon of Great British Detectives?

She drinks beer, drives a Land Rover and can never remember the names of her sidekick’s wife and daughter: welcome to the offbeat world of Vera Stanhope, deliciously imagined by writer Ann Cleeves and actor Brenda Blethyn. ITV’s Sunday night cop show-by-the sea, Vera, is back with a fourth series which will be welcome news for a loyal few million viewers and for the people who like to sell Northumberland as a tourist attraction.

Endeavour, Series 2, ITV

ENDEAVOUR, SERIES 2, ITV Morse prequel tries to bash its young detective into shape

Morse prequel tries to bash its young detective into shape

The last time the whippersnapper Morse was on our screens he was getting (a) orphaned and (b) shot. This double dose of pain seemed a bit punitive, but then when sorrows come they come not single spies. The second series of Endeavour seems determined to stack up yet more agonies. So far Morse has been knocked out cold, sustained an unsightly gash on the bridge of his nose, and cowers every time he hears a loud bang. You could swear he’s walked in off the pages of the Bash Street Kids.

The Widower, ITV

Is the story of murderous Malcolm Webster a suitable case for dramatic treatment?

It was something of a relief when the police were finally alerted to the sinister motives of Malcolm Webster in last night’s second episode of The Widower. ITV’s three-part dramatisation of the killer’s exploits (he was convicted in 2011 of murdering his first wife and trying to kill his second) raises interesting questions not only concerning how we tell stories about crimes from real-life, but whether we actually tell them at all.