'Remember it, then,' said Vincent. 'I will tell you more when I have thought things out a little. In the meantime, the less we see of that scoundrel the better. Can't you take Mabel home now?'

'Yes,' said Mark, 'we will go home, and—and you will come to-morrow?'

'To-morrow,' said Vincent. 'Tell her nothing till you have seen me!'

They were returning to the music-room when Mrs. Featherstone passed.

'Have you seen Mr. Caffyn?' she asked Mark. 'I want to talk to him about the alterations in the fourth act.'

'He went to sit out one of the dances with Mabel, Gilda said, but I sent her to look for them, and she hasn't come back yet. I think they must have gone through the Gold Room, and out on the balcony—it's cooler there.'

When she had passed on out of hearing, Mark turned to Vincent. 'Did you hear that?' he said. 'Mabel is out there ... with him—we are saved the trouble of telling her anything now ... that devil means to tell her himself! I can't stay here!'

'Tell me where you are going—for God's sake don't do anything rash!' cried Vincent. 'You may be wrong!' He caught him by the arm as he spoke.

'Let me go!' said Mark, wrenching himself free.

Vincent would have accompanied him, but the excitement had turned him suddenly faint and dizzy, and he found himself obliged to remain where he was, until the attack passed and left him able to move and think once more.