He tried the window catch, and then walked about the room, examining it closely. His quick, eager eyes, looking about in every direction, were caught by something glittering on the carpet, close to the bed. He glanced at his companions. As a detective, he had long learnt the wisdom of caution in the presence of friends and relatives.
"I should like to be left alone in the room in order to examine it more thoroughly," he briefly announced.
When Miss Heredith and Musard had left the room he locked the door behind them, and, kneeling down by the bedside, disentangled a small shining object almost concealed in the thick green texture of the carpet. It was a trinket like a bar brooch, with gold clasps. The bar was of transparent stone, clear as glass, with a faint sea-green tinge, and speckled in the interior with small black spots. Caldew had never seen a stone like it. The frail gold of the setting suggested that it was not of much intrinsic value, but it was a pretty little trinket, such as ladies sometimes wear as a mascot. Caldew reflected that if it were a mascot it was by no means certain that the owner was a woman. Many young officers took mascots to the front for luck.
As he turned it over in his hand he observed some lettering on the underside. He examined it curiously, and saw that an inscription had been scratched into the stone in round, irregular handwriting—obviously an unskilled, almost childish effort. Holding the brooch closer to the light, he was able to decipher the inscription. It consisted of two words—"Semper Fidelis."
It seemed to Caldew that the inscription rather weakened the correctness of his first impression that the trinket had been worn as a feminine mascot. He doubted very much whether any modern woman would cherish a mid-Victorian sentiment like "Always Faithful." On the other hand, many men might. His experience as a detective had led him to the belief that men were more prone to such sentiments than the other sex, though their conduct rarely accorded with their protestations and temporary intentions.
Struck by a sudden thought, he dropped the trinket back on the carpet. It was just visible in the thick pile.
"A good idea!" he murmured, as he rose to his feet. "I'll watch this room to-night."
As he stood there, speculating on the possibility of the owner of the trinket returning to the room to search for it, he was interrupted by a low tap at the door. He walked across and opened it. Tufnell stood outside, grave and composed.
"Mr. Musard would like to see you in the library," he said.
His tone was even and almost deferential, but the detective's watchful eyes intercepted a fleeting glance cast by the butler over his shoulder in the direction of the still figure on the bed.