Madge remained quiet for a few minutes, then suddenly asked:

“Are you certain the Zudi Drum was kept in this room?”

“I don’t see where else it could be.”

“I should have thought your father would have been afraid of it being stolen. Doesn’t he have any other place where he keeps his valuables?”

At Madge’s words, a startled expression came into Enid’s eyes. She sprang to her feet.

“Why didn’t I think of it before? Father may have put that drum in the wall safe!”

“Do you know the combination?” Madge demanded eagerly.

“If I haven’t forgotten.”

“Then let’s have a look.”

With one accord, the three friends rushed for the stairs.