This text is for students taking courses in complex litigation, advanced civil procedure, or mass torts. It is also designed as a concise book for members of the bench and bar who are handling multidistrict litigation cases. Its focus is on all aspects of federal multidistrict litigation (MDL), including statistics on MDL cases; comparisons with other aggregation devices (such as class actions); the decision of the Judicial Panel on Multidistrict Litigation (the Panel) to centralize cases (including the standards for centralization and the selection of the MDL district court and judge); appellate review of Panel decisions; tag-along cases; the role of the MDL transferee judge (including case management, designating lead lawyers and committees, deciding motions, conducting bellwether trials, overseeing settlements, and awarding attorneys' fees); choice-of-law issues in MDLs; personal jurisdiction and venue issues; remand of transferred cases; federal/state coordination (including state MDL statutes); and proposals for reform of MDL practice.