‘What the hell,’ he said to himself, pushing open the door and starting to climb the stairs.

In the upstairs foyer he was eyeballed by security: two of them looking uncomfortable in their black suits and bowties, white shirts. One skinny - he’d be all about speed and manoeuvres; one a real heavyweight - slow muscle to back up the fast moves. Rebus seemed to pass whatever test they’d just given him. He bought a twenty’s worth of chips and walked into the gaming room.

At one time, it would have been the drawing-room of a Georgian house. There were two huge bay windows, and ornate cornicing connected the twenty-foot-high cream walls to the pastel-pink ceiling. Now it was home to gaming tables: blackjack, dice, roulette. Hostesses moved between the tables, taking orders for drinks. There was very little noise: the gamblers took their work seriously. Rebus wouldn’t have called the place busy, but what clientele there was comprised a veritable United Nations. Matsumoto’s coat had disappeared into the cloakroom, and he was seated at the roulette table. Rebus sat down beside two men at the blackjack table, nodded a greeting. The dealer - young, but obviously sure of himself - smiled. Rebus won with his first hand. Lost with his second and third. Won again with his fourth. There was a voice just behind his right ear.

‘Something to drink, sir?’

The hostess had bent forward to speak to him, showing plenty of cleavage.

‘Coke,’ he told her. ‘Ice and lemon.’

He pretended to watch her move away. Really, he was scoping the room. He’d sat in on the game quickly: walking around the room would have attracted everyone’s interest, and he couldn’t be sure if there’d be anyone here who’d know him.

He needn’t have worried. The only person he recognised was Matsumoto, rubbing his hands as the croupier pushed chips towards him. Rebus stuck on eighteen. The dealer got twenty. Rebus had never been a great gambler. He’d tried the football pools, sometimes the horses, and now occasionally the lottery. But fruit machines didn’t interest him; the poker sessions organised in the office didn’t interest him. He had other ways of losing money.

Matsumoto lost and gave what sounded like a curse, a little bit louder than the room liked. The skinny security ape put his head around the door, but Matsumoto ignored him, and when Mr Skinny saw who was making the noise, he retreated fast. Matsumoto laughed: he might not have much English, but he knew he had power in this place. He told everyone something in a stream of Japanese, nodding, trying for eye contact. Then a hostess brought him a big tumbler of whisky and ice. He handed her a couple of chips as a tip. The croupier was telling everyone to place their bets. Matsumoto quietened down and went back to work.

Rebus’s drink was a while coming, Coke the unlikely beverage of the high roller. He’d won a couple of hands, felt a bit better. Stood up to accept the drink. The table knew to leave him out of the next deal.