Lost Yesterday (Destroyer Series #65)

The leaders of the Poweressence cult have a potion—a “brain regenerator”—that will erase memories. Witnesses forget their testimonies, the President is threatened and the followers use their positive powers to establish an island kingdom. Enter Remo, the ultimate negative force. While America is held hostage, The Destroyer fights his own battle to recover lost memories of Sinanju and his future. Chiun is poised and ready…will a fatal lapse of memory cause the death of a President?

Remo Williams is The Destroyer, an all-American cop recruited—through highly unorthodox methods—into a secret government law-enforcement organization. Trained in the esoteric martial art of Sinanju by his aged Korean mentor, Chiun, Remo is America's last line of defense against mad scientists, organized crime, ancient undead gods, and anything else that threatens the Constitution. An action-adventure series leavened with social and political satire, the Destroyer novels have been thrilling readers worldwide for decades.