Down below she hears the laughing voices of children taking shelter from the downpour. She hears the siren of a passing emergency vehicle and sees a fire engine whizz past. Her heart pounds in time to its scream as she runs towards the bins and follows the route the figure used to leave the estate. Her eyes scan the street outside but there is no sign of him. She sees the fire engine’s lights in the distance near to where she left Quinn. There is no sign of the man. He could have jumped in a car or on a bus and disappeared to God knows where. She phones Quinn again and this time he picks up.

‘He was here. @nonymous was here just now!’ says Archer, catching her breath.

‘Did you see him?’

‘Yes . . . but he was too far away.’

Archer can hear the siren pass Quinn by.

‘Are you still at the Aylesbury Estate?’

She can only just about hear him.

‘Yes.’

‘I’m on my way. I’ll be there in a few moments.’

She makes a call to the Forensics team and from the back of the car takes out two forensic suits.

Quinn joins her outside the apartment as she photographs the painting.

‘He’s painted this with a stencil again,’ says Quinn. ‘Like Banksy does. Allows him to finish quickly and get out.’

‘He was inside the flat,’ says Archer. ‘He broke in by the look of it.’

The Indian man reappears from his doorway. ‘What is going on?’

‘Police,’ says Quinn. He asks the man his name.

‘Vaz Kumar.’

‘Mr Kumar, please remain inside your flat. We’ll come and talk to you later.’

He nods and disappears inside.

For the second time that day Archer and Quinn put on forensic suits.

The lights in the flat are switched off. She sweeps the beam of her torch across the hallway, searching for the switch. She presses it but the light doesn’t come on.

‘Hello?’ she calls, but no one answers.

She listens, zoning in on the rooms close by but hears nothing. The first door to her right opens onto a small kitchen. There’s a stack of washed pots and dishes at the side of the sink waiting to be put away.

‘Mr Kelly? Police. The door was open,’ she says aloud. ‘We thought we’d check to see if you were OK.’

With Quinn behind her, she moves stealthily through the hallway. Crouching down, she finds a pay-as-you-go electricity meter, which has clearly not been paid. She peers into the living room. It’s small and cluttered and to her relief no one is inside. A part of her expected to find the corpse of Jordan Kelly or even his father Frank.

The main bedroom is messy with the wardrobe and drawers open and clothes everywhere. What has he been looking for?