As Winters watched Edgar McKee disappear into the hotel room, he noticed that he was carrying a bag and remembered the leg of lamb he’d brought along to keep sweet the woman he knew as Marlene Black.

‘We’ll fast forward again,’ said Tommy.

At 7.55 pm, a woman stepped out of the lift where the first man had previously emerged. Tommy paused it on a clear frontal shot of the woman walking directly to the room where Edgar McKee was waiting. It was Susan Hurst.

She was dressed in a smart black winter coat with boots that came up to the hemline below the knee and her hair hung down from a black hat. On her shoulder there was an expensive handbag and her hands were encased in black leather gloves.

‘You’ve got to hand it to her,’ said Tommy.

‘She doesn’t look like a sex worker. I see how difficult it must be for you, Tommy.’

‘I guess we’re not going to be that interested in anything until quarter to ten.’

‘For now. I’d like to see what happens from a quarter to ten, but if you could send us the whole footage from beginning to end, we can check if they stayed in the room the whole time.’

At 9.45 pm, the corridor was full of a group of people that didn’t include either Edgar McKee or Susan Hurst.

Ten minutes later, the door of Room 1002 opened and Susan Hurst emerged, carrying the bag that Edgar McKee had taken into the room. She swung her handbag squarely on to her shoulder and spoke into the room.

Edgar McKee came out of the room.

‘He’s not our guy,’ said Winters, thinking aloud.

Edgar McKee walked side by side with Susan Hurst and Winters noticed how relaxed their body language was around each other; they could have been a regular happy couple.

As they made their way towards the lift, Winters saw that Edgar McKee appeared to be struggling, his confident swagger from hours earlier completely gone.

Why are you limping, Edgar? Winters asked silently.

‘He looks like he’s worn himself out,’ said Tommy. ‘I mean, half an hour to an hour’s pretty standard, but two hours?’

‘From what we’ve found so far, he’s a sex addict. Can you do me a favour, Tommy? Can you pull together the footage of the two of them arriving at the room and the two of them leaving and put it on a pen drive for me so I can show my colleagues.’

‘No problem.’

When the lift arrived at 10.03 pm, there was a discussion between Edgar McKee and Susan Hurst. With a hand gesture, he indicated for Susan to get into the lift first. She shook her head and mirrored his action.

With some reluctance, Edgar McKee got into the lift and Susan Hurst stayed where she was and he was gone.