Fortified with coffee and cake, they parked round the corner from the house and crept up the footpath that ran down the back of the properties. There was a gate into the garden, which was bolted on the inside and too high for them to climb over. But the footpath ran down the side of the garage to the road at the front of the house, and they snuck around the corner, careful to be quiet.

Matt had arranged for a small glass window to be put in the side wall, to give some natural light in his office. It was frosted security glass, with wire inside, and although they couldn’t see through, they could make out the glow from the lights, a shadow moving. Matt was in there.

Their plan was already decided. Sara would stay out of sight while Hailey knocked on his office door, pretending she was a delivery driver with a package that needed to be signed for. When he opened the door, they’d rush him and get inside. Then he wouldn’t have time to turn things off and hide what he was doing.

Sara’s pulse raced as she had a quick look up and down the street to make sure the neighbours weren’t around, then she pressed herself to the side of the garage while Hailey knocked on the door.

‘Got a package for you here,’ she called in a gruff voice.

No answer. She knocked again. Called louder.

‘Got a delivery that needs to be signed for.’

The key turned in the lock, and as soon as the door started to open, Hailey pushed forwards, Sara behind her, their joint momentum making Matt stagger back. His arms windmilled as he lost his balance, and Hailey was on him in a flash, grabbing his arm and pulling it up his back. He screamed, and she gave a satisfied smile, while Sara looked on in alarm, wondering when her sister had learnt to be a ninja.

‘Don’t hurt him, Hailey.’

‘I’m not,’ she said, between clenched teeth, giving his hand a twist and making him wince. ‘I’m just securing him. It’s a restraining technique we use at work. Quite safe.’

Matt’s eyes slid to the two large screens set up side by side on his desk, both of them blank.

‘You can’t do this. You can’t barge in here,’ he said, all stern and authoritative, as if that would be enough to stop them. ‘This is confidential. I have an obligation to my client—’

‘Oh shut up, will you?’ Hailey snarled. Her eyes had a steely glint and Sara didn’t think she’d ever seen her look quite so ferocious. ‘Start searching. Let’s see what we can find, shall we?’ She tugged Matt backwards to give Sara access to the desk.