Van Dyk went back to his room at the "Golden Helmet" and began inspecting the contents of the arms and ammunition chest which Jerome Ewouts and his three mates had brought the night before from Rotterdam. He had been somewhat unquiet at having seen nothing of those mariners during the day; when looking out of window, he saw one of them in conference with some soldiers. A minute afterwards he heard a bustle in the rooms below, and found that the house was occupied by a guard, and that Gerritsen, with the three first engaged sailors Dirk, Peter, and Herman, had been arrested at the Zotje. He tried in vain to throw the arms back into the chest and conceal it under the bed, but it was too late. Seizing his hat and wrapping himself in his cloak, with his sword by his side, he walked calmly down the stairs looking carelessly at the group of soldiers and prisoners who filled the passages. A waiter informed the provost-marshal in command that the gentleman was a respectable boarder at the tavern, well known to him for many years. The conspirator passed unchallenged and went straight to inform Stoutenburg.
The four mariners, last engaged by Slatius at Rotterdam, had signally exemplified the danger of half confidences. Surprised that they should have been so mysteriously entrusted with the execution of an enterprise the particulars of which were concealed from them, and suspecting that crime alone could command such very high prices as had been paid and promised by the ex-clergyman, they had gone straight to the residence of the Stadholder, after depositing the chest at the "Golden Helmet."
Finding that he had driven as usual to Ryswyk, they followed him thither, and by dint of much importunity obtained an audience. If the enterprise was a patriotic one, they reasoned, he would probably know of it and approve it. If it were criminal, it would be useful for them to reveal and dangerous to conceal it.
They told the story so far as they knew it to the Prince and showed him the money, 300 florins apiece, which they had already received from Slatius. Maurice hesitated not an instant. It was evident that a dark conspiracy was afoot. He ordered the sailors to return to the Hague by another and circuitous road through Voorburg, while he lost not a moment himself in hurrying back as fast as his horses would carry him. Summoning the president and several councillors of the chief tribunal, he took instant measures to take possession of the two taverns, and arrest all the strangers found in them.
Meantime van Dyk came into the house of the widow Barneveld and found Stoutenburg in the stable-yard. He told him the plot was discovered, the chest of arms at the "Golden Helmet" found. "Are there any private letters or papers in the bog?" asked Stoutenburg. "None relating to the affair," was the answer.
"Take yourself off as fast as possible," said Stoutenburg. Van Dyk needed no urging. He escaped through the stables and across the fields in the direction of Leyden. After skulking about for a week however and making very little progress, he was arrested at Hazerswoude, having broken through the ice while attempting to skate across the inundated and frozen pastures in that region.
Proclamations were at once made, denouncing the foul conspiracy in which the sons of the late Advocate Barneveld, the Remonstrant clergyman Slatius, and others, were the ringleaders, and offering 4000 florins each for their apprehension. A public thanksgiving for the deliverance was made in all the churches on the 8th February.
On the 12th February the States-General sent letters to all their ambassadors and foreign agents, informing them of this execrable plot to overthrow the Commonwealth and take the life of the Stadholder, set on foot by certain Arminian preachers and others of that faction, and this too in winter, when the ice and snow made hostile invasion practicable, and when the enemy was encamped in so many places in the neighbourhood. "The Arminians," said the despatch, "are so filled with bitterness that they would rather the Republic should be lost than that their pretended grievances should go unredressed." Almost every pulpit shook with Contra-Remonstrant thunder against the whole society of Remonstrants, who were held up to the world as rebels and prince-murderers; the criminal conspiracy being charged upon them as a body. Hardly a man of that persuasion dared venture into the streets and public places, for fear of being put to death by the rabble. The Chevalier William of Nassau, natural son of the Stadholder, was very loud and violent in all the taverns and tap-rooms, drinking mighty draughts to the damnation of the Arminians.
Many of the timid in consequence shrank away from the society and joined the Contra-Remonstrant Church, while the more courageous members, together with the leaders of that now abhorred communion, published long and stirring appeals to the universal sense of justice, which was outraged by the spectacle of a whole sect being punished for a crime committed by a few individuals, who had once been unworthy members of it.
Meantime hue and cry was made after the fugitive conspirators. The Blansaerts and William Party having set off from Leyden towards the Hague on Monday night, in order, as they said, to betray their employers, whose money they had taken, and whose criminal orders they had agreed to execute, attempted to escape, but were arrested within ten days. They were exhibited at their prison at Amsterdam to an immense concourse at a shilling a peep, the sums thus collected being distributed to the poor. Slatius made his way disguised as a boor into Friesland, and after various adventures attempted to cross the Bourtange Moors to Lingen. Stopping to refresh himself at a tavern near Koevorden, he found himself in the tap-room in presence of Quartermaster Blau and a company of soldiers from the garrison. The dark scowling boor, travel-stained and weary, with felt hat slouched over his forbidding visage, fierce and timorous at once like a hunted wild beast, excited their suspicion. Seeing himself watched, he got up, paid his scot, and departed, leaving his can of beer untasted. This decided the quartermaster, who accordingly followed the peasant out of the house, and arrested him as a Spanish spy on the watch for the train of specie which the soldiers were then conveying into Koevorden Castle.