It was one of the more lurid incidents in a life that has not been precisely colourless. There we were, trying to row a leaking boat across a very deep, very cold lake during a violent thunderstorm, with an aquatic assassin holding on to the bow and slashing at me with a knife. I had just about resigned myself to dying young when John went over the side of the boat. He was unarmed and outweighed, but he managed to keep Leif occupied until I got to shore. They found Leif’s body later. John never turned up, dead or alive. Everybody except me assumed he had drowned. After eight months without a word I began to wonder myself.

The matter of the Trojan gold⁴ gave me an excuse to contact John, through the anonymous channels that were the only ones I knew. To be honest, I was surprised when he responded. He had once told me I brought him nothing but bad luck.

His luck didn’t improve. He got me out of trouble a couple of times, and the second rescue resulted in a considerable amount of damage to John himself. This was decidedly against his principles. He had once explained them to me: ‘It is impossible to convince some people of the error of their ways without hitting them as often and as hard as possible. I simply object to people hitting me.’

The Trojan gold affair had ended with another event John undoubtedly resented as much as he hated being hit by people. I had taken ruthless advantage of a man who was battered, bruised, and bloody to force him to admit he loved me. He had used the word before, but always in context – Shakespeare or John Donne or some other literary glant. The phrases I had wrung out of him that day were boringly banal and dire. They had no literary merit whatever.

It had been ten months since that momentous event. I had seen John only three times, but almost every week I’d received some message on a postcard or a silly present or a few words on my answering machine – just enough to let me know he was all right.

The last postcard had arrived at the end of August – six weeks ago. There had been nothing since.

I got up and went to the washbasin to rinse the jelly off my hand. I’d have to leave the museum and call Karl from a kiosk or a café; I didn’t want Gerda listening in.

The ‘individual’ referred to in the message from Burckhardt’s agent had to be John. He was the only crook I knew that well, and I was one of the few people in the world who knew him that well, one of the few who had seen him au naturel, who would probably recognize him no matter what disguise he assumed. He couldn’t hide the shape of his hands or his long lashes or . . .

Six weeks without a word. How could he do this to me, the bastard? Love had nothing to do with it. I was inclined to take that declaration of his with a grain of salt, and I had never returned the compliment; but if he meant to end the relationship, the least he owed me was a courteous dismissal.