But he thought he had given them to me--and he knew no more of the diamonds in their red case than I did--far less, indeed.
"I was distracted to find that my letters had disappeared, though I was thankful for Raoul's sake, to have the necklace.

Mr.Dundas believed that his own leather case with the letters must have been stolen from his pocket in the train, though he couldn't imagine why the diamonds had been given to him instead.

But he suspected a travelling companion of his, who had acted queerly; and he determined to try and find the man.
He was to bring me news after the theatre at my house, about midnight.
"He came fifteen minutes later, having been detained at his hotel.
Friends of his had unexpectedly arrived.

He had just time to tell me this, and that after going out on a false scent he had employed a detective named Girard, when Monsieur du Laurier arrived unexpectedly.
It seems, he'd been made frantically jealous by some misrepresentations of--the man whose name we haven't mentioned.

I begged Mr.Dundas to hide in my boudoir, which he disliked doing, but finally did, to please me.