He was riding close behind him when the king received his second and fatal wound in the back, and the moment the king had fallen he rode away from the field, and it is asserted that it was he who brought the news of the king's death to Wallenstein.
Very soon after the battle he exchanged the Swedish service for the Saxon, and some eighteen months later he re-embraced the Roman Catholic faith and re-entered the Imperial army.
A stronger case of circumstantial evidence could hardly be put together, and it would certainly seem as if Lauenburg had entered the Swedish service with the intention of murdering the king.

That he did not carry out his purpose during the attack on the Altenburg was perhaps due to the fact that Gustavus may not have been in such a position as to afford him an opportunity of doing so with safety to himself.
It is certainly curious that after that fight he should have absented himself, and only rejoined on the eve of the battle of Lutzen.

The only piece of evidence in his favour is that of Truchsess, a chamberlain of the king, who, affirmed that he saw the fatal shot fired at a distance of ten paces from the king by an Imperial officer, Lieutenant General Falkenberg, who at once turned and fled, but was pursued and cut down by Luckau, master of horse of Franz Albert.
The general opinion of contemporary writers is certainly to the effect that the King of Sweden was murdered by Franz Albert; but the absolute facts must ever remain in doubt.
On the morning after the battle Wallenstein, having been joined by Pappenheim's infantry, sent a division of Croats back to the battlefield to take possession of it should they find that the Swedes had retired; but on their report that they still held the ground he retired at once from Leipzig, and, evacuating Saxony, marched into Bohemia, leaving the Swedes free to accomplish their junction with the army of the Elector, thus gaining the object for which they had fought at Lutzen.
After the death of the king, Malcolm Graheme, full of grief and rage at the loss of the monarch who was loved by all his troops, and had treated him with special kindness, joined the soldiers of Duke Bernhard, and took part in the charge which swept back the Imperialists and captured the cannon on the hill.

At the very commencement of the struggle his horse fell dead under him, and he fought on foot among the Swedish infantry; but when the arrival of Pappenheim on the field enabled the Imperialists again to assume the offensive, Malcolm, having picked up a pike from the hands of a dead soldier, fought shoulder to shoulder in the ranks as the Swedes, contesting stubbornly every foot of the ground, were gradually driven back towards the road.
Suddenly a shot struck him; he reeled backwards a few feet, strove to steady himself and to level his pike, and then all consciousness left him, and he fell prostrate.

Again and again, as the fortune of the desperate fray wavered one way or the other, did friend and foe pass over the place where he lay.
So thickly strewn was the field with dead that the combatants in their desperate struggle had long ceased to pick their way over the fallen, but trampled ruthlessly upon and over them as, hoarsely shouting their battle cry, they either pressed forward after the slowly retreating foe or with obstinate bravery strove to resist the charges of the enemy.
When Malcolm recovered his consciousness all was still, save that here and there a faint moan was heard from others who like himself lay wounded on the battlefield.