"Black Sun is fascinating and has fearsome authenticity."--Frederick Forsyth, #1 New York Times bestselling author"Thrilling and suspenseful." --Simon Sebeag Montefiore, New York Times bestselling author of The Romanovs"To call the novel chilling is an understatement."--Booklist (starred review)It is the dawn of the 1960s. In order to investigate the gruesome death of a brilliant young physicist, KGB officer Major Alexander Vasin must leave Moscow for Arzamas-16, a top-secret