"Yes," she whispered in a low, intense voice. "You are my only friend, Mr Waldron. I will put my entire trust in you."

"Then _addio_--for the present," he said hastily. "I have not a second to spare. I will do all I can to save you from exposure and scandal, Lola. So remain calm, and leave all to me."

"I do--I do," she answered frantically. "Ah! what should I do at this moment without your kind aid?"

"No, no," he protested, again bowing and kissing her hand in his courtly manner.

He dared not kiss her upon the lips, though he was sorely tempted.

"Au revoir," he said. "Return to Rome as soon as ever you can, I beg of you. Fear nothing from either Ghelardi or this spy who has vanished."

And he hurried out, down the wide stone stairs of the great prison-like old palace, a fortress in the days of the Cinquecento, but now turned into an _albergo_.

Pucci stood below. A car would be round in ten minutes--the best and most powerful he could obtain. But of hire cars in the remote town of Orvieto not much could be expected, therefore when half an hour later they found themselves speeding in the twilight through the hills and dales of the white, dusty road towards the Lake of Bolsena they were not surprised to find that the engine had a nasty knock, and its firing distinctly bad.

The chauffeur, a dark, beetle-browed young man of the debonair _giovanotto_ type, had, however, entered fully into the spirit of the chase, and was travelling with all speed, following the tracks of Flobecq's car, which could be distinctly discerned in the thick white dust.

In the little town of Bolsena, beside the lake, they ascertained that a grey car had come swiftly through, and had turned to the right at the water's edge, taking the road which at the end of the lake branched in two directions, one leading westwards to the sea at Orbetello, forty-five miles or so as the crow flics, or about ninety by road, while the other led direct north, the highway to Siena and Firenze.

It had now grown too dark to see the tracks in the dust, therefore taking their head-lamps they made careful examination of the road, but, alas! upon both they saw motor tracks which seemed in that uncertain light to be exactly similar.

Truly Mijoux Flobecq was an elusive person.

In that, one of the wildest and most unfrequented parts of Italy, where even to-day the motorist is lucky if he is not stoned, and where the peasantry are uncouth and hardly civilised, a night journey was not at all inviting.

After a brief consultation they both agreed that the most probable intention of the fugitive--if his suspicions had been aroused, as was most likely--would be to go north, join the railway on the main line to Florence, and probably get out of the country immediately, carrying with him the Princess's letters.

The coup had failed, and Lola knowing him to be a spy, might reveal the truth. Flobecq was wary enough to foresee such an awkward eventuality.

Hence his headlong flight, which had, no doubt, been cunningly arranged, as were all his rapid journeys.

Hubert was just about to mount into the car and continue northward along the straight, well-made road which ran first to Acquapendente and then to Radicofani--a village of bad repute on the top of a conical hill, where every car was stoned as it pa.s.sed, the King's included--when his quick ears caught a sound.

A motor cyclist was coming rapidly along the road leading westward.

As he approached Pucci hailed him, and he pulled up.

"Have you met a big, open, grey car half an hour or so ago?" the detective inquired of the young man, who seemed surprised at being thus stopped.

"Yes. It pa.s.sed me just as I came out of Pitigliano village. At least I suppose it must have been the car you mention. The lights were out, and it was travelling very swiftly."

"Going towards...o...b..tello--eh?"

"Yes. That is the only place it can reach. The road runs quite straight down the valley, and there are no branches until you get to the sea at Albegna."

"He's gone to Orbetello, no doubt," Hubert exclaimed. "He will catch the express for Turin from there. We must make all haste possible."

Then, thanking the motor cyclist for his information, the car was backed and turned, and soon they were tearing through the gathering darkness down a long, winding valley which echoed to the roar of their engine and the constant hoot of their horn.

Steep and dangerous was the road in many places, with a loose surface and a number of sharp turns. The drive was a wild one, but if Flobecq was to be intercepted before he caught the night express for the frontier they would have to drive madly.

The beetle-browed chauffeur of Orvieto drove as he had never driven before, though Italians are noteworthy as dare-devil drivers. They pa.s.sed through Pitigliano--where the cyclist had met the fugitive--and on again into the wild, dark mountains to Manciano, a remote place in the midst of high, barren precipices. Then, after a steep descent, they at last, after nearly two and a half hours, met a drover who confirmed the cyclist, and said that a motor without lights had gone past long ago, after nearly running him down.

The chase was, indeed, exciting.

The Englishman and his companion sat in the car full of eager anxiety.

Once Flobecq gained the train at its stopping-place, Orbetello--that quaint old town on the Mediterranean sh.o.r.e--then he would escape, as without a warrant he could not be detained.

So they urged on the chauffeur, who now drove with all the nerve and daring he possessed. The night became thick and black with those dark, low clouds which in spring in Italy are so frequent, and herald a thunderstorm.

The storm came at last, just about eleven. The lightning flashed and the thunder rolled, echoing and reverberating along the valley where the road ran beside the rushing torrent on its way to the sea.

Then, after four hours of the most exciting drive that either man had experienced, they came to the junction of the Albegna River, and then out upon a broad road across a plain, straight toward the open sea.

After a further eighteen miles or so, a red light showed suddenly--the light of a level railway crossing. They had at last gained the main line which runs by the Maremme from Rome to Pisa--the main line to Genoa and Turin.

Pa.s.sing the crossing, the gates closed behind them with a clang almost immediately, and then, the road ran parallel with the railway for many miles towards ancient Orbetello with its ponderous walls and the sea.

Hubert bent, and striking a match with difficulty, looked at his watch.

It wanted eighteen minutes to midnight.

He and his companion had on the way calculated that if they lost no time they could reach Orbetello, which was one of the stopping-places of the night express from Rome for Paris, just before the train was due to arrive.

Twice after leaving the mountains they had news of the car they were chasing, once from a shepherd and again from two mounted carabinieri.

If they could reach Orbetello they might prevent Flobecq from leaving.

"We must not yet demand his arrest," the Englishman said to the man at his side. "If we did then it would result in just the thing we are endeavouring to avoid--exposure!"

"No, signore. We must catch him up and keep in touch with him until you decide what action to take in Her Highness's interests."

The chauffeur, urged on by Hubert, drove with reckless speed, with the railway line always on their left, and now and then pa.s.sing red and green, signals, and the small, lonely houses of the watchmen of the line.

Already in the far distance could be seen the lights of the little town out at the end of a promontory at the foot of the high, dark Monte Argentario, rising straight from the sea, a corner of Italy which no one ever visits, though it is on the direct sea road to Rome.

"At last!" cried Waldron excitedly, pointing out the lights.

"Yes, signore, that is...o...b..tello!" declared Pucci. "But see," he added quickly. "See that single light on the left yonder! Is it not moving-- coming towards us?"

Hubert strained his eyes in the direction which the detective pointed.

"By gad! yes. Why--why it's a train. And it is coming towards us!" he gasped.

At that moment they pa.s.sed a signal which fell, showing the line to be clear.

Both men sat silent, watching the rather dim but fast-approaching light.

Yes, a.s.suredly it was a train which had stopped at Orbetello and was now on its way towards the north!

On it came swiftly, with a red glare showing from the furnace, until suddenly, with a bursting roar, it thundered past.