Morton's fork

Morton's Fork was the name Gatherer Hade gave to the plan with which he intended to draw out the outlaws living in the undercity. It involved sending in a group of the Inner Retinue guard that would force them out into the open where they could be picked off. Hade named it after Morton, one of his predecessors. (DW: The Sun Makers)

Behind the scenes
In reality, "" is a term for a forced choice between two lines of reasoning which lead to the same unpleasant conclusion. It derives from, Archbishop of Canterbury and Lord Chancellor under Henry VII, who argued that a man living frugally must have money to spare and therefore could afford to pay taxes, and that a man living opulently must be rich and therefore could afford to pay taxes.