This investigative report from the 'Top Secret' newsletter examines whether the FSB had foreknowledge of the 1999 Moscow apartment bombings. It focuses on a threatening letter sent to the Prosecutor General's Office on August 21, 1999, by a group calling itself 'Volunteers of Russia,' which demanded the release of prisoner Natalya Viktorovna Zander and threatened explosions every seven days starting September 1. The document details how a man named Vladimir predicted the Guryanova Street bombing to a newspaper editorial office hours before it occurred. It covers the 2002 arrest of Anatoly Viktorovich Mylnikov, whom the FSB accused of authoring the threats, while Mylnikov claims he is being framed to cover up FSB involvement. The narrative highlights the FSB's initial dismissal of this lead in favor of the 'Chechen trail' and suggests the investigation was only revived following Boris Berezovsky's public accusations and the release of the film 'FSB Blows Up Russia.'