The door was opened, and the heavy curtain pushed aside, revealing the anxious features of Able-Seaman Cassidy.

"Well, Cassidy?" asked the skipper encouragingly.

"It's about that dawg, sir," began the sailor. "Mr. Fordyce's dawg."

"Has she bitten anyone?"

"Sure, no, sir; leastwise not as I knows of. But she's absent without leave, sir."

"For how long?"

"Can't say, sir. Cook's mate says as 'ow Flirt was in the galley just afore dinner. Me and my mates have looked everywhere."

"Have you tried Mr. Fordyce's cabin?"

"Sure that Oi have, sir."

"Well, she's not here, Cassidy," said the Hon. Derek, giving a perfunctory glance under the settee. "Have another hunt round and then report to me. The dog may have taken it into her head to go ashore for a prowl round."