From the summer of 1727 until the spring of 1728 there is no extant correspondence either with Percival or “Tom Prior” to throw light on his movements. In February, 1728, he was still in London, but he “hoped to set out for Dublin in March, and to America in May.” There is a mystery about this visit to Dublin. “I propose to set out for Dublin about a month hence,” he writes to “dear Tom,” “but of this you must not give the least intimation to anybody. It is of all things my earnest desire (and for very good reasons) not to have it known that I am in Dublin. Speak not, therefore, one syllable of it to any mortal whatsoever. When I formerly desired you to take a place for me near the town, you gave out that you were looking for a retired lodging for a friend of yours; upon which everybody surmised me to be the person. I must beg you not to act in the like manner now, but to take for me an entire house in your own name, and as for yourself; for, all things considered, I am determined upon a whole house, with no mortal in it but a maid of your own putting, who is to look on herself as your servant. Let there be two bed-chambers: one for you, another for me; and, as you like, you may ever and anon lie there. I would have the house, with necessary furniture, taken by the month (or otherwise, as you can), for I propose staying not beyond that time; and yet perhaps I may. Take it as soon as possible.... Let me entreat you to say nothing of this to anybody, but to do the thing directly.... I would of all things ... have a proper place in a retired situation, where I may have access to fields and sweet air provided against the moment I arrive. I am inclined to think one may be better concealed in the outermost skirt of the suburbs, than in the country or within the town.... A house quite detached in the country I should have no objection to, provided you judge that I shall not be liable to discovery in it. The place called Bermuda I am utterly against. Dear Tom, do this matter cleanly and cleverly, without waiting for further advice.... To the person from whom you hire it (whom alone I would have you speak of it to) it will not seem strange you should at this time of the year be desirous, for your own convenience or health, to have a place in a free and open air.” This mysterious letter was written in April. From April till September Berkeley again disappears. There is in all this a curious secretiveness of which one has repeated examples in his life. Whether he went to Dublin in that spring, or why he wanted to go, does not appear.