Francis was at the pitch of surprise and horror; his sentiments had been shocked to the last degree; the hopeful tenderness with which he had taken his place upon the bench was transformed into repulsion and despair; old Mr. Scrymgeour, he reflected, was a far more kindly and creditable parent than this dangerous and violent intriguer; but he retained his presence of mind, and suffered not a moment to elapse before he was on the trail of the Dictator.

That gentleman’s fury carried him forward at a brisk pace, and he was so completely occupied in his angry thoughts that he never so much as cast a look behind him till he reached his own door.

His house stood high up in the Rue Lepic, commanding a view of all Paris and enjoying the pure air of the heights. It was two storeys high, with green blinds and shutters; and all the windows looking on the street were hermetically closed. Tops of trees showed over the high garden wall, and the wall was protected by chevaux-de-frise. The Dictator paused a moment while he searched his pocket for a key; and then, opening a gate, disappeared within the enclosure.

Francis looked about him; the neighbourhood was very lonely, the house isolated in its garden. It seemed as if his observation must here come to an abrupt end. A second glance, however, showed him a tall house next door presenting a gable to the garden, and in this gable a single window. He passed to the front and saw a ticket offering unfurnished lodgings by the month; and, on inquiry, the room which commanded the Dictator’s garden proved to be one of those to let. Francis did not hesitate a moment; he took the room, paid an advance upon the rent, and returned to his hotel to seek his baggage.

The old man with the sabre-cut might or might not be his father; he might or he might not be upon the true scent; but he was certainly on the edge of an exciting mystery, and he promised himself that he would not relax his observation until he had got to the bottom of the secret.

From the window of his new apartment Francis Scrymgeour commanded a complete view into the garden of the house with the green blinds. Immediately below him a very comely chestnut with wide boughs sheltered a pair of rustic tables where people might dine in the height of summer. On all sides save one a dense vegetation concealed the soil; but there, between the tables and the house, he saw a patch of gravel walk leading from the verandah to the garden-gate. Studying the place from between the boards of the Venetian shutters, which he durst not open for fear of attracting attention, Francis observed but little to indicate the manners of the inhabitants, and that little argued no more than a close reserve and a taste for solitude. The garden was conventual, the house had the air of a prison. The green blinds were all drawn down upon the outside; the door into the verandah was closed; the garden, as far as he could see it, was left entirely to itself in the evening sunshine. A modest curl of smoke from a single chimney alone testified to the presence of living people.

In order that he might not be entirely idle, and to give a certain colour to his way of life, Francis had purchased Euclid’s Geometry in French, which he set himself to copy and translate on the top of his portmanteau and seated on the floor against the wall; for he was equally without chair or table. From time to time he would rise and cast a glance into the enclosure of the house with the green blinds; but the windows remained obstinately closed and the garden empty.

Only late in the evening did anything occur to reward his continued attention. Between nine and ten the sharp tinkle of a bell aroused him from a fit of dozing; and he sprang to his observatory in time to hear an important noise of locks being opened and bars removed, and to see Mr. Vandeleur, carrying a lantern and clothed in a flowing robe of black velvet with a skull-cap to match, issue from under the verandah and proceed leisurely towards the garden gate. The sound of bolts and bars was then repeated; and a moment after Francis perceived the Dictator escorting into the house, in the mobile light of the lantern, an individual of the lowest and most despicable appearance.

Half-an-hour afterwards the visitor was reconducted to the street; and Mr. Vandeleur, setting his light upon one of the rustic tables, finished a cigar with great deliberation under the foliage of the chestnut. Francis, peering through a clear space among the leaves, was able to follow his gestures as he threw away the ash or enjoyed a copious inhalation; and beheld a cloud upon the old man’s brow and a forcible action of the lips, which testified to some deep and probably painful train of thought. The cigar was already almost at an end, when the voice of a young girl was heard suddenly crying the hour from the interior of the house.

“In a moment,” replied John Vandeleur.