In 1993, California enacted a new criminal statute of limitations permitting prosecution for sex-related child abuse where the prior limitations period has expired if, inter alia, the prosecution is begun within one year of a victim's report to police. A subsequently added provision makes clear that this law revives causes of action barred by prior limitations statutes.
Held: A law enacted after expiration of a previously applicable limitations period violates the Ex Post Facto Clause when it is applied to revive a previously time-barred prosecution.