Joe Sandilands was hardly listening. ‘I could have been sailing down the Hooghly River by now! Why the hell didn’t I go last night?’

The Governor resumed, ‘I don’t suppose this is what you wanted for a moment but if you’ll take this on it couldn’t do your career any harm, I think. As I say, there are some very good fellows down there – Bateman’s Horse. We call them the Bengal Greys – grey horses – the Indian equivalent of the Scots Greys, don’t you know… But I won’t waste any more time chatting.’

He held up a letter by its corner. ‘It’s all here but there’s somebody I would like you to meet.’ He seemed for a moment reluctant to come to the point, finally concluding, ‘It’s my niece, you see. She’s about the place somewhere… Her husband is the Collector of Panikhat and they’re stationed down there. Between you and me – and strictly between you and me – he’s a peaceful sort of chap… anything for a quiet life. Not much go about him. Perhaps Nancy ’s only taken this up because she was bored. But, I don’t know – they seem happy enough together. Anyway, Nancy ’s as bright as a new rupee and – ah! Nancy, my dear, there you are! This is Commander Sandilands. Sandilands, my niece, Nancy Drummond.’

For the first time since this terrible news broke for Joe, he woke to the possibility that there might be compensations in this so unwelcome interruption to his life. Mention of the Collector’s wife had instantly produced a vision of Anglo-Indian respectability at its most oppressive but the figure before him was quite a surprise.

For one thing, she was younger by twenty years than he had been expecting and for another, she was smartly – even fashionably – dressed. White silk blouse, well-cut jodhpurs, broad-brimmed hat in one hand, fly whisk in the other and an enquiring – if slightly suspicious – face. He tried not to be too obviously appraising her. He was aware that she was fairly obviously appraising him. This could just be rather fun.

‘Now, Nancy,’ said the Governor, ‘sit down and tell Sandilands what you told me. I’ve warned him that there may be nothing whatever in it but you’ve interested me at least and we’ll do our best to interest him.’

Nancy sat down in a chair opposite Joe and looked at him seriously and for a long time before speaking. Now she was closer he saw that the pretty face was pale and strained. She made no attempt at a smile but went straight into her narrative. Her voice was low and clear, her tone urgent. She’d obviously prepared and prepared again what she was going to say.

‘A week ago a ghastly thing happened on the station. Peggy Somersham, the wife of William Somersham, Captain in the Greys, was found dead in her bath with her wrists cut. Of course, everybody said “Suicide” but, really, there was absolutely no reason. They weren’t very long married. Quite a difference in age – that’s often the way in India – people wait to get hitched till their career is established and an officer does not in fact qualify for a marriage allowance until he is thirty. One can’t always tell, of course, but they seemed not only happy, but very happy together. People often said – “Ideal marriage”.

‘I know that funny things happen in India but just the facts by themselves, to my mind at any rate, were suspicious and Bulstrode, the Police Superintendent, didn’t seem able to explain anything to anyone’s satisfaction. We all thought for one moment he was about to take the easy way out and arrest poor Billy Somersham…’

‘Now Nancy,’ said the Governor, ‘tell it straight.’

‘Sorry, Uncle! And look here…’ She took an envelope from her uncle’s desk, slid out two photographs and handed them to Joe.

His mouth tightened with distaste.

‘Who took these?’

‘Well, actually, I did…’

‘My niece served as a nurse on the Western Front for three years,’ said the Governor and sat back, apologetic but happy with this explanation.

‘Mr Sandilands, sadly, a bathful of blood in my experience is nothing. And I have first-hand knowledge of wounds. Even cut wrists…’ She paused, disturbed momentarily by her memories. ‘I suppose you think it rather shocking that I should be able to stand there in front of this appalling scene and take photographs?’

Not wishing to stop the flow of her story Joe merely nodded. He did find it shocking but realised that a conventional denial would not deceive this determined woman. His professional curiosity was eager for details of how she had managed under those difficult circumstances to take photographs of such clarity but he remained silent and looked at her with what he hoped was a suitable blend of sympathy and encouragement.

‘Yes, well, I was pretty much shocked myself. She was my friend, Mr Sandilands, and this was not easily done. But this is the hot season. There was little else I could do to preserve the scene of the death as it was. Bulstrode was giving orders for the body to be taken away and buried at once and he authorised the khitmutgar to arrange for the bathroom to be cleaned up. I’m afraid I stepped in and insisted that Andrew – that’s my husband, the Collector – called him off. Of course the body had to be buried, after a quick post-mortem done by the station doctor, but we managed to get the servants to leave as much as possible of the bathroom untouched. I don’t want to interfere, of course…’ (The Governor smiled ironically.) ‘… but a word with the doctor mightn’t be out of place. His name is Halloran. I don’t know him very well. Irish. A lot of army doctors are. He seems nice enough.’

‘You preserved the scene of crime – if crime it was – Mrs Drummond, and with the skill, apparently, of a seasoned officer of the Met. But I’m wondering why it should have occurred to you to take these steps…?’

‘My uncle had spoken about you and the work you were doing here in Calcutta when I was last here some weeks ago. I popped into one of your lectures and I was very impressed with what you had to say. I tried to wangle a meeting there and then but you were besieged by a phalanx of earnest young Bengali Police Force officers and I had to drift away. But then, when this happened, I rang Uncle at once and he made a few telephone calls, worked his magic and here we are.’

She smiled for the first time since they had met and her face lit up with mischief. ‘And I don’t suppose you’re at all pleased!’

Joe smiled back. He had an idea that there was not much he would be able to conceal from the Collector’s wife.

‘It’s difficult to make out but if you will look at the second photograph…’ she said, drawing his attention back to the horror he still held in his hand.

Joe concentrated on the close-up of the dead girl’s wrists and saw at once where she was leading but he let her go on.

‘You see it, don’t you? She couldn’t have done that herself, don’t you agree?’

Joe nodded and she went on, ‘But that’s not all of it, nor perhaps even the worst of it, Commander. After Peggy’s death the gossip started. I’ve only been on the station for three years and I hadn’t heard the stories… in any case, I think people thought it was all over… like a nightmare. It stops and you lull yourself into thinking it’s never going to happen again. And then it does. And it’s worse than before.

‘Everyone who had been there since before the war was eager to tell me the stories.’ She leaned forward in her chair to emphasise her point. ‘Mr Sandilands, every year before the war and going back to 1910, the wife of a Greys officer has been killed. In March.

‘The first to die was Mrs Major Prentice – Dorothy. In a fire. Tragic, of course, but no one paid all that much attention as it was quite clearly due to an act of dacoity – banditry. The forests and some of the villages too used to be infested with bandits before the war. They are still to be found but it’s nothing like so bad as it was thanks to Prentice and others. The following March in 1911, Joan Carmichael, the wife of Colonel Carmichael, was fatally bitten by a snake. And there’s nothing strange about that in India, you’re going to say – but in this case there was an oddity… The next March, Sheila Forbes fell over a precipice while out riding and in 1913 Alicia Simms-Warburton was drowned.’