Extradition, the formal process of surrendering an individual from one jurisdiction to another for prosecution, becomes a moral quagmire in the multiverse. A citizen of a hyper-libertarian reality where information piracy is a celebrated art form flees to a rigidly controlled corporate dystopia after 'liberating' data. The dystopia demands extradition for grand theft. The home reality refuses, viewing the request as politically motivated persecution of a digital freedom fighter. The fugitive, meanwhile, may claim asylum in a third reality, arguing that neither of the first two can provide a fair trial. The IMJ serves as the essential intermediary in these conflicts, applying its extradition treaties which are binding on all signatory realities.
The cornerstone of IMJ extradition law is the Principle of Dual Criminality: the act for which extradition is sought must be a crime punishable under the laws of both the requesting reality *and* the reality where the fugitive is found, as well as under the Multiversal Legal Compact. This prevents realities from using extradition as a tool to punish political dissent or behaviors that are locally acceptable.
The protracted case of the 'Philosopher-General' is instructive. A military leader from a reality at war ordered a tactical strike that destroyed a city, an act legal under their wartime doctrines. He fled to a pacifist reality that considered the act mass murder. The warlike reality requested extradition for desertion; the pacifist reality wanted to try him for crimes against sentience. Dual criminality for 'desertion' failed (it wasn't a crime in the pacifist world), and for 'murder' it was murky (it was a legal act of war in his home). The IMJ ultimately invoked its hosted trial option, trying him for 'Reckless Multiversal Endangerment'—a Compact crime—for allowing a conflict to spill over and threaten dimensional stability. This novel approach resolved the impasse and created a new legal tool for cross-dimensional conflicts.