‘Hi, Lyd.’ Polly smiled from the other side of the table and tried to hide her surprise.

‘Hello.’

‘Good morning, Lydia,’ said Mr Mason. ‘A bit too damned early for visitors, wouldn’t you say?’ His tone was one she’d heard him use to the boot boy. She couldn’t bear to look at him. Instead she stared at the delicate finger bowl beside him, and became curious about the slice of lemon floating in the water.

‘Yes, sir.’

‘So why are you here?’

‘Oh, Christopher,’ said Anthea Mason, ‘we’re always happy to see Lydia any time, aren’t we, Polly? Sit and have a bite to eat, dear.’

But Lydia would rather swallow her tongue than sit down at the same table with the man who last night had been molesting her mother. Both she and Valentina had carefully avoided mentioning the subject of what they both knew Lydia had seen, but the pictures were still vivid inside her head.

‘No, thank you,’ she said politely. ‘I just want a word with Polly, if I may.’

Mason leaned back in his chair and tossed the paper to the ground. ‘Now then, young lady,’ he said, ‘whatever you want to say to our daughter can be said in front of us. We have no secrets round here.’

The barefaced lie. It made Lydia blink, and she opened her mouth to utter a sharp retort, but Polly forestalled her. She jumped to her feet, grabbing the napkin from her lap. Lydia knew for a fact it had come from London, from a shop called Givan’s on New Bond Street, twenty-nine shillings and ninepence for a dozen, Polly had told her proudly, all fine Irish damask. Whatever that was.

‘Daddy, we’ll just find Toby and walk him down to the park.’

‘That’ll be fun for him. Take his ball and don’t forget to wear your hat,’ Anthea Mason said with a look at her husband.

He turned his face away from her and gave a smile to the cat draped across his lap, its yellow eyes watching him closely. ‘Don’t be long.’

‘No, just a quick run,’ Polly said.

‘Church at eleven sharp. I don’t want you making us late.’

‘We won’t, I promise.’

As she passed him, he reached up and ruffled her blond hair, but to Lydia the gesture looked awkward, as if it were something he’d once seen a father do and decided to copy it. Polly’s cheeks turned pink, but then she was always nervous around her father and never talked about him, not even in private. Lydia, knowing nothing about fathers, assumed this was normal.

‘Polly, I need a favour.’ Lydia clutched her friend’s arm.

‘What is it?’

‘A big favour.’

Polly’s eyes grew bluer and rounder. ‘I just knew it had to be something really important for you to barge in on Father so early. What is it? Quick, tell me.’ She twirled Toby’s lead in her hand.

They were sitting on a bench in the sunshine, throwing balls for Polly’s Tibetan spaniel. They had avoided Victoria Park with its No Dogs. No Chinese notices and opted for Alexandra Gardens, where Toby was allowed to race around, as long as he kept out of the canna flowerbeds and the koi fish pond, where frogs lurked under lily pads and taunted his insatiable nose.

‘It’s… well… you see… oh Polly, I need to get back into the club.’

‘What? The Ulysses Club?’

‘Yes.’

‘But why?’

‘I just do.’

‘That’s no answer.’ Polly twisted her pretty face into a scowl, but there was no conviction in it. She was never much good at being cross with Lydia, but tried to keep that fact a secret. ‘I thought that last night would have put you off that club for life. It would me. To be searched by a ghastly old nurse.’ She gave a dainty little shudder that rippled through her soft blond hair. ‘How perfectly disgusting.’ She leaned closer, eyes fixed on Lydia’s. ‘Was the search very, you know, very sort of… intimate? ’ She held her breath.

‘Oh God, yes.’

Polly’s mouth popped open and she gave a gasp. ‘Oh Lyd, that’s horrible. Poor you.’ She gave her friend a quick hug.

‘So?’

‘So what?’ Polly asked.

‘So will you speak to your father for me?’

‘Oh Lyd, I can’t.’

‘You can, you know you can. Please, Polly.’

‘But why do you want to go back to the club? They searched everyone and every room but didn’t find the stolen necklace. So what can you do?’ She glanced around quickly and lowered her voice to a bare whisper. ‘Did you see something? Do you know who took it?’

‘No, no, of course not, or I’d have told the police.’

‘Then why?’

‘Because… oh, all right, I’ll tell you, but you must promise to keep it secret.’

Polly nodded eagerly, licked a finger and drew a cross on her throat. ‘Hope to die.’

‘Remember the young man who rescued me in the alley on Friday? With his flying kung fu kicks…’

‘Yes?’

‘Well, he turned up at the club last night.’

‘No.’

‘Yes.’

‘Did he steal the necklace?’

‘Don’t be silly,’ Lydia said quickly, ‘of course he didn’t. He had come especially to speak to me about something. He said it was important. But we were interrupted by all the police running around after they discovered the necklace had gone, so he asked me to come back today… I really owe it to him, Polly, and I don’t know where else to find him.’

To Lydia’s horror, she suddenly realised her fingers were tugging at a strand of hair just in front of her right ear. Oh damn. Her mother was right. She dropped it quickly, gave Polly a sideways glance to see if she’d noticed, and bent to pick up Toby’s ball.

‘But there’s something I don’t understand, Lyd.’

Lydia threw the ball for the dog.

‘You say your mother hardly ever scolds you, Lyd, just lets you do what you like. That’s why I’m green with envy, you know that. I wish I had the freedom she allows you.’ She turned and looked quizzically at her friend. ‘So why all the secrecy? Can’t your mother… or even her French friend with the Morgan… can’t they get you in?’

Lydia hated lying to Polly, the one person in the whole world she was honest with, but she had to get back inside the club today if she was to retrieve the rubies from their hiding place in the Reading Room. And now Polly was being stubborn.

Lydia leaped to her feet and tossed her head impatiently. ‘Neither my mother nor Antoine are members, as you well know. But if you’re too scared to ask your father to invite me in there, I’ll ask him myself.’

‘But he’ll want to know why.’

‘That’s okay, I’ll tell him I lost a brooch or something last night.’

‘He’ll only get annoyed and say if you can’t look after something properly, you don’t deserve it in the first place.’

‘Oh, Polly, you are such a baby,’ Lydia snapped and stalked off toward the park gates.

But Polly came running after her with Toby bouncing around her ankles. ‘Please, Lyd, don’t be angry.’

‘I’m not.’

But she was. Angry with herself. She turned and looked at Polly, at her lovely pale cornflower dress, at her smart patent leather shoes and at her wide blue eyes creased with worry, and hated herself. She had no right to drag this shiny new silver dollar of a person through the dirt. She was so used to it herself, she forgot that others found its smell distressing. She drew Polly’s arm through her own and gave her a shaky smile.

‘Sorry, Polly, I know I’m too hotheaded sometimes.’

‘It’s the red hair.’

They both laughed and felt the friendship slip back in place.

‘Okay, I’ll ask Father.’

‘Thanks.’

‘But it won’t work.’

‘Please try.’

‘On condition you tell me more about your mystery Chinese rescuer after you see him again.’ She paused, attached her puppy to the lead once more, ruffled his ears, and, while her face was averted, asked, ‘You don’t think it might be a bit dangerous? I mean, you know nothing about him, do you?’

‘Except that he saved me from slavery… or worse.’ Lydia laughed. ‘Don’t fret, you silly. I promise to tell you everything that happens.’