‘You honour us, Prince,’ Racksole observed. ‘Let us come to business. Am I right in assuming that you have a reason for keeping the police out of this business, if it can possibly be done?’

‘Yes,’ said the Prince, and his brow clouded. ‘I am very much afraid that my poor nephew has involved himself in some scrape that he would wish not to be divulged.’

‘Then you do not believe that he is the victim of foul play?’

‘I do not.’

‘And the reason, if I may ask it?’

‘Mr Racksole, we speak in confidence—is it not so? Some years ago my foolish nephew had an affair—an affair with a feminine star of the Berlin stage. For anything I know, the lady may have been the very pattern of her sex, but where a reigning Prince is concerned scandal cannot be avoided in such a matter. I had thought that the affair was quite at an end, since my nephew’s betrothal to Princess Anna of Eckstein-Schwartzburg is shortly to be announced. But yesterday I saw the lady to whom I have referred driving on the Digue. The coincidence of her presence here with my nephew’s disappearance is too extraordinary to be disregarded.’

‘But how does this theory square with the murder of Reginald Dimmock?’

‘It does not square with it. My idea is that the murder of poor Dimmock and the disappearance of my nephew are entirely unconnected—unless, indeed, this Berlin actress is playing into the hands of the murderers. I had not thought of that.’

‘Then what do you propose to do to-night?’

‘I propose to enter the house which Miss Racksole entered last night and to find out something definite.’