He studied the geography of the wild country which surrounded Glencoe, and made his arrangements with infernal skill.

If possible, the blow must be quick, and crushing, and altogether unexpected.

But if Mac Ian should apprehend danger and should attempt to take refuge in the territories of his neighbours, he must find every road barred.

The pass of Rannoch must be secured.

The Laird of Weems, who was powerful in Strath Tay, must be told that, if he harbours the outlaws, he does so at his peril.
Breadalbane promised to cut off the retreat of the fugitives on one side, Mac Callum More on another.