And he went out.
At lunch time Marigold met her lover, and it was arranged that, as he would be at the office late that evening, he should not resume his watch until the following evening, neither of them, of course, suspecting that Boyne knew they were keeping him under observation or that he was busy laying a most devilish plan for their undoing.
Gerald Durrant had grown fonder of Marigold than ever, and the pair were now inseparable. He disliked the idea of the girl living in that house of mystery, but she told him that she was in no way afraid, and that she was determined to solve the curious motive of Boyne's double life.
When, at six o'clock, she returned she sat down to tea with her aunt, and later, while she was laying Mr. Boyne's table, he came in, greeting her cheerily, as was his wont.
His attitude towards her was distinctly friendly, for he gave no outward sign of suspicion.
The evening passed uneventfully, for Boyne went out about eight o'clock, and he did not return until long after the old woman and her niece were in bed.
Marigold listened, but only heard him go up to his bedroom and close the door. After that there was no other sound.
Boyne spent part of the following day with Lilla at Pont Street, where he held a long and secret consultation with her, after which he took a taxi to Upper Brook Street and sat with Ena for half an hour, explaining what he had discovered concerning the unwelcome attention which young Durrant and the girl was paying to him.
The Red Widow at once became greatly perturbed.
"But how much can they know?" she gasped, leaning forward in her chair, pale and agitated.
"Very little."
"They know nothing of your upstairs friend – eh?"
"No. But they may suspect."
"Then their suspicion must be at once removed, my dear Bernie!" said the woman, in a decisive voice. "We are, I see, confronted with a very grave peril."
"I agree. Lionel will be wondering why I've not been up to see him since Sunday. I shall go up this afternoon, before the girl comes back from the bank. I've got a lot of stuff to take up to him. He's got no kettle, poor chap!"
"Ah! What a life he must lead," said the woman.
"It is his own fault. He was too curious – and he got the worst of it, as they all do!"
"But he was quite harmless. This fellow Durrant is our enemy."
"And he must be treated as such. I've found out a lot about his movements," said Boyne.
"You quickly find out about people, Bernie. You're really wonderful."
"Not very wonderful, Ena," he laughed. "I simply went a few days ago to Chalmers, the private inquiry agent in Regent Street who has done work for me often. I told him I had lent young Durrant money, and wanted to know something of his habits and of his friends. This morning I had a long confidential report about him. He lives out at Ealing."
"A pity you allowed the girl to stay with her aunt. Why ever did you do so?"
"Well, if she wished to walk into a trap, then it surely wasn't my business to keep her out of it – was it?" he asked, with a sinister smile. "I knew the reason why she had so suddenly been deprived of her room at Wimbledon Park, and allowed her to think that I was a fool."
"She'll no doubt know different ere long," laughed the Red Widow.
Then, opening the door, Boyne satisfied himself that there was no servant in the passage, and returning to her, he began to speak rapidly in a low, tense voice.
"What?" she asked breathlessly, when he had finished. "To-night?"
"Yes, to-night – why not?" he asked. "Wear one of your smartest black dresses. Come round and see Lilla. Then you and she can arrange things."
"But, Bernard! It's a most desperate game!"
"Not more so than any other," he laughed. "A dangerous situation always calls for drastic measures."
"But will the trap be sufficiently well-baited?"
"I'll see to that – never fear! Just act as I tell you and to-morrow we shan't have much to fear from at least one of this inquisitive pair!"
For a few minutes she seemed lost in thought.
"Ah! I see you are hesitating, Ena!" he laughed again.
"I am. It's a terrible plot!"
"Bah! Fancy you saying so – you! who have assisted to bring off so many little affairs that have brought us big money. Surely you're not growing squeamish now, at a moment when we are all in distinct peril?"
"No," she answered with an effort, for it was evident that the plan which he had placed before her had held her horrified. "No, I – I'm not – not at all squeamish, but – well – I'm wondering if we couldn't find some other way out of it."
"None. We're in danger, and we must take precautions to defend ourselves – at once – to-night!"
"Very well," she answered somewhat reluctantly. "I'll go round to Lilla about six."
"When we meet we shall do so as strangers, of course," he said, with a sinister smile. "Look your best – won't you?"
"Very well," she laughed, and five minutes later he sat down at the telephone in the room and spoke to his wife.
"All right, Lilla," he said. "Ena will be with you about six. I've told her exactly what we've arranged. I'm now going back to Hammersmith," and, after hanging up the receiver, he took leave of the Red Widow and went direct to Bridge Place.
Mrs. Felmore was surprised that her master should return so early, for he was at home before five. Marigold had not come in from the office, therefore he sent the deaf old woman out to the post, and, putting on his long white gown, took up to the attic the new tin kettle and some other things. But he did not obtain them from that cupboard in his room. He had purchased duplicates on his way home.
He was not upstairs for more than five minutes – just sufficient to reassure the weird recluse and hand to him the necessities required. Then he came down again, and calmly read the evening paper till his meal was ready.
Marigold did not return before seven, but she left her lover to resume his vigil outside.
At eight o'clock Bernard Boyne went out as usual, and Marigold spent another quiet evening with her aunt, confident that Gerald was keeping a very vigilant eye upon the man of mystery!
Next day at the lunch hour she went eagerly to the little restaurant, but he did not put in an appearance. She wondered why.
On returning to the bank she at once rang up his office, but was informed that he had not been there that day! He had sent his principal a telegram stating that he had been suddenly taken ill, and apologised for his absence. The doctor had said that he could not return for several days.
Making excuse to Mr. Kenyon, the assistant manager, she left the bank at four, and at once went over to Ealing, only to find that his sister had received a telegram late on the previous night, which had been handed in at Charing Cross Post Office and read:
"Don't worry! Am all right. Returning in two or three days. Writing.– GERALD."
Further mystified, she at once went back to Hammersmith, where she found a telegram which had arrived for her at eleven o'clock that morning. It had been dispatched from Knightsbridge, and read: