‘It was strange. We knew something was about to happen because Hugo was there. Guido served the couple dinner. They were already dressed as Vikings by then. None of us got to watch the games, but we could hear them. The screams of the audience went all over the ship. That was how we knew something was wrong. The lights went out, the noise stopped. Then real screaming started.’

‘Where were you?’

‘In my hiding place.’

‘Why?’

‘Hugo had used me in the arena before. I didn’t want it to happen again. Guido, the others . . .’ She stumbled there, obviously distressed. ‘When I eventually came out, there was no one there. He’d killed them all.’

‘Did you go to the arena?’

She shook her head. ‘Not until later. Then, when I got through the maze and saw them, I was sick. The storm had really hit by then, so I went back to my hiding place. I thought I was going to die anyway.’

‘Why didn’t you come out when the Orlova was boarded?’

‘When I heard the helicopter, I thought they’d come back to clear up the bodies after the storm. I knew if I came out they would kill me too. So when Dougie broke into my room a few days later, I attacked him.’

The story had holes, but none of them pointed to the girl being involved with the deaths and they had the footage to show that.

When McNab checked with Janice, she gave a small nod indicating she too was satisfied.

They thanked Nadia and let her leave the room.

‘What do you think?’ McNab said.

‘She’s traumatized but with help and support she’ll make a good witness.’

‘No lies?’

‘She avoided the truth on occasion. Dr MacLeod says her DNA was on the couple’s bed. I think she was made to have sex with them and other guests too.’

‘Hugo had the means and the opportunity to kill them,’ McNab said. ‘But what was the motive?’

‘Pleasure? Or he was paid to do it? Or he killed them as a warning?’ Janice tried.

‘Or all three together,’ McNab said, recalling his own brush with Hugo.

They had Ava in next. McNab hadn’t laid eyes on her since their meal with Rhona. Back then she’d been concerned and still trying to decide her course of action. The woman who walked into the interview room no longer had misgivings about why she was here or what she intended doing.

Taking a seat, she reached into her pocket and drew out a memory stick. ‘I should have given you this before but Mark asked me not to. I believe he was killed because of what’s on here.’

‘You withheld information from a police enquiry?’ Janice said.