I looked at the images of Rosa’s newsagent’s. Sifted through what I knew and remembered about her: determined not to give the shop up; adamant she wouldn’t go and stay with Agnieszka or Tomasz; feeling safest at the shop. ‘Personally, I can’t see that but I’m happy to ask her about it when I go round there. I don’t think she cares about the business much any more, but I do think she cares about the building. It’s where all her memories are, and they’re all she’s got. At the moment, she hasn’t forged a link with her future. She’s a bright lady. She’ll know that getting someone to start a fire in her shop could go badly wrong.’

‘Assuming the flash mob was still a distraction, we know that Kenny Hayes’ prints were on the speakers. We need to keep him in our sights. Otherwise, what about people who would benefit financially from getting their hands on the shop, or Rosa’s savings and any insurances she may have?’ He faced us. ‘Agnieszka and her family live in a pretty small house. What about her or Olaf?’

‘I know we decided it was unlikely that Olaf is still involved with LfA,’ said Dan. ‘But he does seem like a man under pressure.’

‘And then there’s Tomasz,’ Alexej said. ‘He’s clearly a shrewd businessman.’

‘He’s also loaded so what would he gain?’ The images of Indra and Simas reminded me of Artem’s comments. ‘We also need to consider Artem. He thinks that shops like Rosa’s have become redundant. In fact, he even named her business and the Walkers’ off-licence.’ His comments had sent shivers down my spine. ‘He could have a number of motives.’ I added his name to the board. ‘What else do we know that might help us?’

Alexej’s head shot up from his monitor. ‘An update has just been added from last night. An eyewitness saw our appeal and called in.’ He was reading off HOLMES. ‘Chap works nights and uses the alley as a short-cut. Says he’s seen a man hanging about at the rear of Rosa Feldman’s newsagent’s several times in the last fortnight.’

‘Can we get a description from him?’

‘I’m on it. His phone’s switched off. He’s probably asleep.’ He checked the clock. ‘I’ve already begun calling in the CCTV that covers the alley behind Rosa’s shop. It’s mainly all private but people are on edge after the fire and will want to help, I’m sure.’