But in these days it was impossible to be firm without sternness, and James made enemies. When he was staying at Perth one Christmas-time, these enemies, led by a bold villain called Sir Robert Graham, secretly encircled the house where he was staying. The unarmed king only heard of their presence when they were advancing, fully armed, to his room. He tore up a plank in the floor, seeking thus to find a hiding-place. The enemies were almost at the door, and it was necessary to delay their entrance, for one minute might save his life. All the bars of the door had been removed beforehand, but a brave heroine, Kate Douglas, thrust her arm through the staples. The villains were angered to find the door barred against them, and hurled their weight upon it. The Douglas heroine stood there, her pale face set hard, without a cry, as the crash broke the bone of her brave strong arm, and the would-be murderers staggered in. But alas! the sacrifice of Kate Douglas availed nothing except to place her name upon the immortal roll of the heroes of the ages, for after a brief search the murderers found the king and slew him. The queen, who had loved James with the utmost devotion, found her love give added fierceness to her hate against his murderers. They were all tracked down, and she caused them to die with terrible tortures, the cruellest of which she reserved for Graham. Thus did great King James’s "milk-white dove" revenge the slaying of the husband she loved dearer than life itself. Till this time it had seemed as if the Douglases were devoted to the good of Scotland. But in those wild, reckless times qualities that were strong for good could also be strong for evil. When James I. of Scotland was murdered, his young son was only six years old. This meant that for many years there would be no strong king able to cope with the lawless spirit of the nobles, strongest among whom were the proud, bold Douglases. The lawlessness of the times is well shown by an act of foul treachery committed by Sir William Crichton, Governor of Edinburgh, and an enemy of the Douglas family. He invited one of the earls to dinner at the castle, and while there had him seized and beheaded. It is said that a bull’s head was placed on the dish in front of Douglas, this being a sign that he was to be killed. The people called this "Douglas’s black dinner," and sang of the wicked deed in sorrowful verse:— "Edinburgh Castle, town and tower God grant thou sink for sin! And even for that black dinner Earl Douglas got therein." But the new King James found, before he was twenty years old, that the Douglases themselves could act with equal cruelty and lawlessness.