Why are transparency regimes so rare? When some politicians have something to conceal, why would their opponents not press for transparency? To analyze transitional justice, we build a model that explains why uncompromised politicians might avoid a transparency regime, which could signal to the voters that they are clean. We model the interaction between an incumbent, an opposition leader, a strategic blackmailer, and voters who know that the opposition politician may be compromised. The incumbent can implement a transparency regime, which would force out a compromised opponent and thus make blackmail impossible. We show that, instead, she might strategically opt for no transparency that keeps all skeletons of the ancien regime in the closet, as it is easier to defeat a potentially compromised opponent. We corroborate our results using original data from the Global Transitional Justice Dataset combined with data on elections, incumbency, and successor autocrat status in post-communist Europe.