"Now watch me" said Mr. Winston.
Helen needed no second bidding; her eyes seemed riveted to the little hole.
Mr. Winston placed the key into the hole and turned it twice round. Immeadiately a little spring door flew open displaying two well constructed shelves of solid oak.
"This is my secret safe," said Mr. Winston, "known to no one but myself."
"Father!" cried Helen catching hold of his arm.
"Don't get excited, Helen" said her father. "I am going to disclose all the secrets of this safe to you. Do you perceive that the top shelf is faced in by a thin wire gauze with a handle to the left hand side?"
"Yes father" replied Helen.
"Well, nobody can get at the contents of that shelf without my knowing it."
"Why father?" asked Helen.
"Because there are two ways of opening it. Try to open it yourself and then I will explain it to you" said Mr. Winston.