No one at the office knew anything of the movements of the senior partner.  To all inquiries Ezra replied that he had been ordered by the doctors to seek complete repose in the country.  Dimsdale dogged Ezra’s footsteps night after night in the hope of gaining some clue, but in vain.  On the Saturday he followed him to the railway station, but Ezra, as we have seen, succeeded in giving him the slip.

His father became seriously anxious about the young fellow’s health.  He ate nothing and his sleep was much broken.  Both the old people tried to inculcate patience and moderation.

“That fellow, Ezra Girdlestone, knows where they are,” Tom would cry, striding wildly up and down the room with unkempt hair and clenched hands.  “I will have his secret, if I have to tear it out of him.”

“Steady, lad, steady!” the doctor replied to one of these outbursts.  “There is nothing to be gained by violence.  They are on the right side of the law at present, and you will be on the wrong if you do anything rash.  The girl could have written if she were uncomfortable.”

“Ah, so she could.  She must have forgotten us.  How could she, after all that has passed!”

“Let us hope for the best, let us hope for the best,” the doctor would say soothingly.  Yet it must be confessed that he was considerably staggered by the turn which things had taken.  He had seen so much of the world in his professional capacity that he had become a very reliable judge of character.  All his instincts told him that Kate Harston was a true-hearted and well-principled girl.  It was not in her nature to leave London and never to send a single line to her friends to tell them where or why she had gone.  There must, he was sure, be some good reason for her silence, and this reason resolved itself into one or two things—­either she was ill and unable to hold a pen, or she had lost her freedom and was restrained from writing to them.  The last supposition seemed to the doctor to be the more serious of the two.

Had he known the instability of the Girdlestone firm, and the necessity they were under of getting ready money, he would at once have held the key to the enigma.  He had no idea of that, but in spite of his ignorance he was deeply distrustful of both father and son.  He knew and had often deplored the clause in John Harston’s will by which the ward’s money reverted to the guardian.  Forty thousand pounds were a bait which might tempt even a wealthy man into crooked paths.

It was Saturday—­the third Saturday since Girdlestone and his ward had disappeared.  Dimsdale had fully made up his mind that, go where he would, Ezra should not escape him this time.  On two consecutive Saturdays the young merchant had managed to get away from him, and had been absent each time until the Monday morning.  Tom knew, and the thought was a bitter one, that these days were spent in some unknown retreat in the company of Kate and of her guardian.  This time at least he should not get away without revealing his destination.