When they had all parted at Luxor and Louisa had left the Forresters and the Fieldings to take the steamer north at the start of her journey back to England it had been with many tears and hugs and promises to meet again. Augusta Forrester had written to her often over the past years but not once had she mentioned Egypt. She had been tactful. Her letters were full of reassuring gossip and pleasantries and for that Louisa had been thankful. The Fieldings had never contacted her and she had not expected them to. Too much had happened; the memories were too painful to recall.

And now this. With no time to prepare herself, to seal down the emotions which had been reawakened by their name, to rebury the memories and arm herself against the past, she was about to be catapulted back into a storm of reminiscence and nostalgia and grief. Glancing down at the sketchbook again she bent suddenly to the painting, ripped it from the book and tore it across the middle.

The Fieldings were seated in the great drawing room of Glen Douglas House when Louisa finally forced herself to go downstairs. Katherine saw her first. Rising awkwardly to her feet she smiled. Then she held out her hands. ‘Louisa! Dear, dear Louisa, how are you? I couldn’t believe my ears when Sarah told us you were their guest!’ She kissed Louisa on each cheek, her awkwardness explained on closer inspection by the fact that she was expecting a child.

Louisa returned her smile and turned to greet David Fielding. ‘How are you both? I see the family continues to flourish.’ A gentle acknowledgement of Katherine’s condition.

David nodded. ‘We have three children now. They are upstairs with their nurses. And as you see, we await a fourth.’ He glanced fondly at his wife who nodded a little smugly. ‘You must see Louis, my dear. He is the most beautiful child.’

Louisa nodded. ‘I would expect no less.’ She hoped they were not going to launch into a long explanation of how they knew one another for the benefit of their hostess. But Sarah, it appeared, already knew the story of Louis’s dramatic birth. Either out of great tact or by accident she adroitly changed the subject.

‘The gentlemen are going out on the hill with the guns tomorrow, Louisa. So I thought perhaps we would spend a quiet day in the gardens or maybe take a short carriage drive?’ She raised an eyebrow at their newly arrived guest. ‘Only if Katherine feels like it, of course.’ A well-built, attractive woman with elegantly dressed greying hair, Sarah surveyed her guests calmly, her blue eyes shrewd.

Before Katherine could respond to her suggestion the door opened and another woman walked into the room. David Fielding’s sister, Venetia. Louisa sighed. The younger woman’s figure had thickened slightly in the last seven years in spite of her tightly laced corset, her face had hardened, the corners of her mouth were drawn down, the eyes were a trifle deeper set, but she was still a beautiful woman. In spite of herself, as she stepped forward to greet her, Louisa glanced at her hand. No wedding ring. Obviously not, if she was still trailing around after her brother and his wife.

Venetia’s smile did not quite reach her eyes as she greeted Louisa. Her kiss was perfunctory and did not do more than brush the air beside Louisa’s cheek. ‘How are you now?’ Four innocuous words, but loaded with innuendo and dislike.

‘Well, thank you.’ Louisa smiled and turned to find a seat. A dozen spirited questions and retorts flashed through her mind. All were instantly rejected. Silence was the most dignified route.

Venetia sat down next to Sarah Douglas and smoothed the flounced silk of her skirt over her knees. ‘So, your curiosity got the better of you, Louisa. You couldn’t keep away from Glen Douglas.’ Her smile masked considerable venom. ‘You know, of course, that he’s not here. He’s travelling abroad.’

Louisa frowned. ‘I’m sorry? About whom are we talking?’ She glanced at their host who was engaged in animated conversation with David Fielding by the fireplace. Both men held whisky glasses in their hands. The huge hearth behind them was filled with an arrangement of bog myrtle and heather.

‘Lord Carstairs, of course.’ Venetia’s cheeks coloured slightly.

Louisa stared at her, her own face growing so pale her hostess sat forward anxiously, afraid Louisa was going to faint. ‘Roger Carstairs lives near here?’ Louisa whispered.

Sarah Douglas nodded. ‘So you know him as well? But, of course, you must have met him in Egypt. Our estates march together, my dear. Carstairs Castle is but two miles from here.’

Louisa found her mouth had gone dry. For a moment words failed her totally in the rush of emotions which assailed her. Roger Carstairs: the man who, in Egypt, had asked her to marry him, who had tried to seduce her, who had seen and recognised the little bottle Hassan had given as being something of supreme supernatural importance and who, when he was refused the bottle, had finally been responsible for her beloved Hassan’s death. A man so imbued with evil that his very name sent a shiver of distaste through the households of the British aristocracy amongst whom he used to socialise. A man whom Venetia had liked very much indeed.

Somehow Louisa found her voice, aware that Katherine’s gaze was as full of sympathy and kindness as Venetia’s was of spite.

‘I had no idea this was where he lived.’ She took a deep breath. ‘How extraordinary. But I had heard that he never returned to Britain after -’ She found her voice growing husky. ‘After our visit to Egypt.’

Sarah walked over to the table and poured a glass of ratafia. Handing it to Louisa she smiled. ‘He has a certain reputation, I have to admit. And he doesn’t come home often. But he has two sons who live at Carstairs. They have a tutor who is their guardian, I believe, in their father’s absence. And he does return to see them from time to time. We haven’t met him lately. He does not visit his neighbours.’ She glanced from Venetia to Katherine and then back to Louisa, her face suddenly alight with mischief. ‘I have an idea!’ She plumped down on the ottoman next to Katherine. ‘We could drive over to the castle tomorrow. He has a museum. In the stable block, I believe. A friend of ours went to see it. Lord Carstairs’s servants would show it to us. I understand it is very interesting. He spent a year in India quite recently and after that he was in America. He has a collection of fascinating artefacts from the American Indian tribes. Feathered head-dresses. Peace pipes. All kinds of things.’ Her eyes were sparkling. ‘Would you like to go?’

Louisa was torn. Part of her shrank from the prospect of going anywhere near the castle. But another part of her was intrigued, both to see where Roger Carstairs lived, and to view the curiosities he had brought back from his travels. Curiosities presumably like the ancient bottle Hassan had given her, which Carstairs had so wanted for his collection that he had been prepared to kill to obtain it; the bottle which lay hidden at this very moment in the secret compartment in the desk of her London home. Oh yes, she would be interested to see it all, just so long as it was certain, beyond all possible doubt, that he was not there himself.

Carstairs Castle was a grey stone edifice, with turrets and battlements surmounting small windows in thick ancient walls. As their coach rumbled up the curving drive through the rhododendrons, brought by his lordship from India and already growing in profusion, the four ladies stared out with eager curiosity. The messenger who had ridden over the previous evening to see if their visit was convenient had returned with an assurance that Mr Dunglass, Lord Carstairs’s factor, would greet them and personally escort them round his lordship’s gardens and museum.

The factor was waiting on the steps at the foot of the main tower. A small, red-haired man wearing the kilt, he stepped forward to greet the visitors.

Louisa climbed out of the coach last and stared round nervously. The place had a prosperous well cared for feel. The paths and driveway were neatly weeded and raked and there were flowers in the beds around the walls. She glanced up and the skin on the back of her neck prickled slightly. Were they being watched? So many narrow deep-set windows, dark and shadowy on this west-facing side of the castle, looked down across the drive and towards the hills. A hundred pairs of eyes could be watching them and they would not know it. She became aware that the others were walking away, following Mr Dunglass around the base of the tower, and she hurried after them, shrugging off her unease. Lord Carstairs was once more in America, so his factor informed them. He was not expected home until next year at the earliest.

A modern stable block and carriage house had been constructed in the early part of the century by Lord Carstairs’s grandfather on the eastern side of the castle. The buildings surrounded a courtyard – a line of loose boxes, all empty as his lordship’s horses were out at grass, on one side, a line of double doors concealing no doubt his lordship’s carriages on the other, while between them, on the south side, rose a small pedimented coach house surmounted by a clock tower. In this building all the windows had been barred. Mr Dunglass headed towards it now, groping in his sporran for a large iron key.

‘This way, Mistress Shelley.’ The man had ushered the others up the steps and through the door as Louisa lagged behind and now he was waiting for her, his eyes boldly on her face. How did he know her name? Standing below him in the cobbled yard she looked up and met his gaze. He did not lower his eyes; his expression was carefully blank but behind the facade there was something else. Insolence? Triumph? The moment passed and he looked away. ‘The others are inside, Mistress Shelley. If you would like to join them I’ll explain some of the items you can see in there.’ His tone was respectful. Even friendly. Surely she had imagined that momentary expression on his face?