In this chapter, I pursue two main goals. First, I argue for a new empirical generalization: An external argument in German passive constructions is accessible from positions below it but inaccessible from positions above it. The evidence for downward accessibility comes from control into adjunct clauses, secondary predicates, and complement clauses, binding of reflexives and reciprocals, and disjoint reference effects. In contrast, the evidence for upward inaccessibility comes from long-distance binding in impersonal passives and standard passives, accessible subjects for control infinitives, criterial movement constraints, minimality of movement effects, and intervention for anaphoric binding. Second, I present a new theory of passivization from which this generalization can be derived: The elementary operation Remove accounts for both accessibility and inaccessibility of external arguments in the passive in German, by correctly predicting a short life cycle. After this, the chapter addresses the question of how variation in the area of passivization can be accounted for in the new model. Next, there is a brief extension of the analysis to adjectival passives, invoking external Remove. The chapter concludes with a discussion of alternative approaches that either maintain strict accessibility or postulate strict inaccessibility, as well of hybrid approaches.