Mr.Penfold, it would seem, used it habitually as a depository for papers of value.

He certainly, therefore, had not to break down or to pull up anything.

He opened it as he would open any other cabinet or cupboard, by means of a key or by touching a spring.
You agree with me so far, Mr.Tallboys ?" "Certainly, Mrs.Conway.There can be no doubt in my mind that this hiding-place, whether a chamber or a small closet, is opened in the way you speak of." "Very well then; all that has to be looked for is a spring.

No force is requisite; all that is to be done is to find the spring." "Yes, but how is it to be found?
I believe we tried every square foot of the building." "I have no doubt you did, but it will be necessary to try every square inch, I will not say of the whole building, but of certain rooms and passages.

I think we may assume that it is not in the upper rooms or servants' quarters.