‘This isn’t revenge,’ I said calmly. ‘It’s business. But I brought the voice message, just in case anyone doubts your character.’

I pulled out my phone and pressed play, connecting it to the ballroom speakers via Bluetooth.

William’s voice filled the room: ‘Catherine… I just wanted to let you know that you don’t need to worry about what to wear tonight… I’m sure you’ve learned to live simply… Don’t be late… Even people who’ve lost everything should be punctual…’