Two of the other men ran to catch William, but they could not go very far. Blocking their way was a group of armed men. They stopped everyone and entered the room, pushing William back into it. None of us had to be told that the man leading the group was a police inspector. Behind him were five constables and, peeping over their shoulders, was the eager and curious face of Lalmohan Babu’s driver, Hari Datta.

‘Shabash, Mr Datta!’ said Feluda.

‘You are Felu Mitter, aren’t you?’ the inspector asked, looking at Feluda. ‘What on earth is going on here? I know Mr Choudhury, but who is this man who was trying to get away?’

Before answering the question, Feluda strode over to Mr Choudhury and retrieved his own revolver from him. Choudhury was obviously so completely taken aback that he did nothing to protest.

‘Thank you, Mr Choudhury,’ said Feluda. ‘Kindly go back to the sofa. You will find it easier from there to watch the final scene in this drama. Besides, black velvet suits you so well! And Mr William—’, Feluda’s eyes turned away from Choudhury, ‘in that wig and false moustache, you are looking exactly like your greatgrandfather. Will you please take them off?’

One of the constables pulled at William’s hair and moustache. Both came off easily, and we saw—to our absolute amazement—that the man standing in the place of William was Naren Biswas’s brother, Girin Biswas.

‘Now, tell me, Mr Biswas,’ said Feluda, ‘what is your full name?’

‘Why, don’t you know my name already?’

‘You appear to have two names. Together, they make up your full name, don’t they? You are called William Girindranath Biswas. Isn’t that right? At least, that is how you are described in the list of gold medallists in the Presidency College magazine. And your brother is called Michael Narendranath Biswas. The “M” on his visiting card stands for “Michael”, does it not? Since you generally use your Bengali names, your brother printed “N. M.” on his card rather than “M. N.”. Am I right?’

Girin Biswas remained silent. Feluda was obviously right.

‘What does your brother call you?’

‘Why? What’s it to you?’

‘Very well. If you won’t tell anyone, I shall. He calls you “Will”. When he regained consciousness in the hospital, it was your name that he mentioned twice. Isn’t that so?’

Feluda took out a large red envelope from his bag. A photograph emerged from it. ‘Look at these people, Mr Biswas. See if you know who they are. Perhaps you don’t have this photo in your house. But there was a copy at Bourne & Shepherd.’

The photo showed a couple. Presumably, it was taken soon after their wedding. The man looked amazingly like Girin Biswas. The woman was clearly British.