The interior of the flat didn’t improve her mood. It was amazing what landlords could get away with these days, now that no one could actually afford to buy a property. The one-bed flat was cramped and unprepossessing. Damp hugged the ceiling, the windows were ill-fitting and draughty and she was sure there were things living behind the skirting boards. Or perhaps dying. The whole place smelt of decay.

Still it was someone’s home and the tenant – Ruby Sprackling – was somebody’s daughter. Alison, her mother, flanked by her worried husband, Jonathan, paced the floor. Tears were not far off, so Sanderson decided to press on and get as much info as she could.

‘There have been a lot of … issues over the last couple of years, but she wouldn’t take off like this,’ Alison was saying. ‘She was due to move back into the family home next week, we’d been talking about it for months, we’d made arrangements …’

‘Could she have got cold feet?’

‘No’ was the swift response, although Sanderson detected a hint of doubt. She was also intrigued by the fact that the stony-faced husband had not said a word.

‘You said that she had been in contact with her birth mother recently?’ Sanderson continued.

‘Not recently, but on and off during the last two years.’ Ruby’s father was keen to talk about this topic. ‘She was a terrible influence,’ he said further, ‘got her into drugs, skipping school, there was trouble with the police. Ruby completely ballsed up her A-Levels because of that bloody woman.’

A sharp look from Alison made him rein in his anger. He ceased his rant but was unrepentant. He knew what he thought of Shanelle Harvey and wasn’t minded to change his opinion. His promising daughter had gone completely off the rails in the last year, prompting furious bust-ups and recriminations within the family – all because of an innocent and well-intentioned desire to create a bond with her biological mother.

As he filled her in on the details, Sanderson couldn’t help feeling that Ruby would have been better off sticking with what she had. Shanelle Harvey had turned out to be a small-time fence, thief and dealer with questionable hobbies and even more questionable boyfriends. Not the plucky but poor earth mother that Ruby had perhaps been hoping to find.

‘You said you weren’t too worried at first, but now …’ Sanderson got the conversation back on track.

‘I wasn’t,’ Alison agreed. ‘Ruby can be unreliable and impulsive – it’s not impossible that she would wind herself up and take off for a bit. But she’s posted one tweet since last night and, believe me, that is seriously out of character. Her phone’s turned off – I’ve tried her a dozen times …’

‘What about keys? Purse?’

‘It looks like she’s got those with her,’ Alison conceded.

‘So she packed a bag … ?’

‘Her rucksack’s not here. And it’s true she’s taken most of her clothes.’

‘Was there any sign of forced entry?’

‘No, the lock’s new and pretty decent and the windows seem ok, but even so …’

Sanderson felt herself mentally switching off, dismissing Alison as a mother in denial, then mentally slapped herself back into concentrating. Helen Grace was very hot on missing persons cases – she always said that they were just the stepping stones to murder cases, rape cases – and Sanderson knew Helen would expect her to leave no stone unturned.

‘Her inhaler.’

Now Alison had Sanderson’s attention.

‘She’s asthmatic?’

‘Since birth. She had several bad attacks when she was a kid. Ended up in hospital twice. Now she always has her inhaler with her. It’s her little mantra going out the door: “Keys, purse, inhaler …” She would never take off without it.’

‘And?’

‘And I found it by the side of her bed. It must have fallen off her bedside table on to the floor. Even if she was in a rush, even if she did want to get away, she would be too scared to leave without her inhaler.’

‘And if she’d forgotten it?’

‘Then she’d come back, regardless,’ Jonathan said firmly, equally concerned it appeared, despite his chequered history with his stepdaughter.

Sanderson asked some more questions, then wrapped things up. This missing persons case had just taken on a more sinister hue. As scrupulous as she was to reassure Alison and Jonathan, the detail of the forgotten inhaler alarmed Sanderson. It’s the kind of thing someone else might miss, but not Ruby, who’d been scarred by asthma since birth. Which raised the question: had Ruby really taken off? Or was a third party involved?

10

Sometimes it was tough being a parent. Scratch that, it was always tough being a parent. Detective Superintendent Ceri Harwood mounted the stairs to the third floor of her fashionable townhouse in a dark mood. She had been nagging her kids to go to bed for nearly an hour now, but still they defied her, finding endless excuses to avoid doing what they were asked. It had been a long day – she didn’t need to be marching up and down the stairs all night, when she could be snuggled up on the sofa with a glass of wine.

‘If you’re not in bed and quiet within two minutes, the PS4 goes into the cupboard for a week.’

It felt good to threaten a week – she had never threatened a whole week before. It had the desired effect. The fourth floor suddenly went very quiet as feet scurried, lights were switched off and peace descended. Harwood waited a further few minutes, then crept up to the top floor and poked her head round the door.

Both girls were fast asleep and, despite her irritation and tiredness, this made her smile. They had had busy days with school, swimming, music lessons, but even so Harwood marvelled at her kids’ ability to drop off to sleep within seconds. It was not a skill she possessed – stress and the fag end of her daily caffeine intake often keeping her awake and restless into the small hours.

It had been a hard year. A year spent swallowing Helen Grace’s heroism and popularity day after day. Grace had brought in two serial killers now and had achieved legendary status within the Force as a result. Outside, in the real world, it was little better: the subject of Helen Grace often came up at dinner parties Harwood attended, people peppering her with questions about the Detective Inspector’s character and talents. It was all Helen, Helen, Helen.

In the professional sphere, Harwood had behaved impeccably. She had patted Helen on the back, congratulated her on her official commendation and made sure she had all the resources she needed. Her success ultimately reflected well on Harwood – but none of this made her feel any better. She remembered Helen’s withering character assassination of her, as they came to blows during the Ella Matthews investigation. Infuriated at what she perceived as Harwood’s attempts to run her out of the Force, Helen had dismissed her as a glorified politician, unfit to wear the police badge. Helen had not mentioned the row since, but Harwood recalled it word for word.

Still, there were some things Ceri had that Helen didn’t. The superior rank. A loving husband. Two beautiful daughters. Harwood stared at the sleeping girls now and her despondency ebbed away. She had always been a fighter and despite having been in Helen Grace’s shadow for so long, where there was life there was hope.

As she descended the stairs once more, Harwood knew that there would be payback. Some day soon, she would settle the score. She had lost the battle after all. She had not lost the war.

11

The seventh-floor office was quiet as the grave. It was after hours now and the rest of the Major Incident Team had headed home, leaving Helen alone. Which is how she liked it. She didn’t need an audience for what she was about to do.