He turned to Béliveau, who looked perplexed. Gabri handed him the photograph and the grocer studied it for a few moments. In the silence they heard more creaks. Something seemed to be coming up the stairs. Clara knew it was all in her mind. Knew what she’d felt before had only been the baby bird, not the monster of her imagination. That bird was dead now. So nothing could be coming up the stairs. Nothing could be on the landing. Nothing could be creaking along the corridor.

‘Hazel’s always been very kind,’ Monsieur Béliveau finally said, looking over at Hazel who’d all but disappeared.

‘You fell in love with him,’ said Gamache. ‘Didn’t you?’

Hazel shook her head slightly.

‘Mom? Did you?’

‘I thought he was nice. I once thought maybe…’

Hazel’s voice petered out.

‘Until Madeleine showed up,’ said Gamache. ‘She didn’t mean to, almost certainly had no idea how you felt about him, but she stole Monsieur Béliveau from you.’

‘He wasn’t mine to steal.’

‘We say that,’ said Gamache, ‘but saying and feeling are very different. You were two lonely people, you and Monsieur Béliveau. In many ways a much more natural match. But Madeleine was this magnificent, lovely, laughing magnet and Monsieur Béliveau was mesmerized. I don’t want to give the impression Madeleine was malicious or mean. She was just being herself. And it was hard not to fall in love with her. Am I right, Monsieur Sandon?’

‘Moi?’

At the sound of his own name Sandon’s head jerked up.

‘You loved her too. Deeply. As deeply and totally as unrequited love can be. In many ways it’s the deepest because it’s never tested. She remained the ideal for you. The perfect woman. But then the perfect woman faltered. She fell in love with someone else. And worse. The one man you despise. Monsieur Béliveau. The bringer of death. The man who allowed a venerable old oak to die in agony.’

‘I could never kill Madeleine. I can’t even cut down a tree. Can’t step on a flower, can’t crush an earwig. I can’t take a life.’

‘But you can, Monsieur Sandon.’ Armand Gamache grew very silent and leaned forward again, staring at the huge lumberjack. ‘You said so yourself. Better to put something out of its misery than allow it to die a long and painful death. You were talking about the oak. But you were prepared to kill it. Put it out of its misery. If you knew Madeleine was dying, perhaps you’d do the same for her.’

Sandon was speechless, his eyes wide, his mouth wide.

‘I loved her. I couldn’t kill her.’

‘Gilles,’ Odile whispered.

‘And she loved someone else.’ Gamache moved in closer, thrusting his words home. ‘She loved Monsieur Béliveau. Every day you saw it, every day it was in your face, undeniable, even for you. She didn’t love you at all.’

‘How could she?’ He rose from his chair, his massive hands clenched like mallets. ‘You don’t know what it was like, to see her with him.’ He turned to look at meek Monsieur Béliveau. ‘I knew she couldn’t care for someone like me, but…’

He faltered.

‘But if she couldn’t love you, she couldn’t love anyone?’ said Gamache softly. ‘It must have been horrible.’

The lumberjack collapsed into his chair. They waited for the crack as the wood gave way, but instead it held him, as a mother might a hurt child.

‘But the stuff that killed her was in the Smyths’ medicine cabinet,’ said Odile wildly. ‘He couldn’t get it.’

‘You’re right. He didn’t have access to their home.’ Gamache turned to Odile. ‘I mentioned the lab report. It said the ephedra that killed Madeleine wasn’t from a recent batch. It was much more natural. I’d been a fool. Over and over people had told me and it never registered. Ephedra’s an herb. A plant. Used for centuries in Chinese medicines. Maybe Gilles didn’t need access to their home. Maybe you didn’t either. You know what I took from your store?’

He stared at Odile, who stared back, frantic and frozen.

‘Ma Huang. An old Chinese herb. Also known as Mormon’s tea. And ephedra.’

‘I didn’t do it. He didn’t do it. He didn’t love her. She was a bitch, a horrible, horrible person. She tricked people into thinking she cared.’

‘You spoke to her, warned her, as you were walking here that night, didn’t you? You told her she could have anyone, but Gilles was the only man you ever wanted. You pleaded with her to stay away from him.’