Rosalind thought swiftly. Neither Gertrude nor Polly was wearing it that evening, she remembered.
Where was it? She had a numbing sense of misgiving.
"Show it to me," she commanded.
"Of course it's possible I've made a mistake, ma'am, but—"
"Where is it?"
"Perhaps it's in the hotel."
"Who is wearing it?"
"Nobody."
"Is it in your pocket?" suspiciously.
The boatman laughed.