Javier, a writer of science programs at the radio station «The Network», unexpectedly receives an offer to take part in a program devoted to a book about Einstein. The broadcast ends in scandal. Its participants have different views on the question: why, after the famous discoveries he made at the beginning of his scientific career, did Einstein fail to make public his “last answer” at the end of his life? Why did he burn his scientific papers before his death? Immediately after the broadcast, the protagonist receives an envelope from an unknown sender containing an old postcard and a single phrase: «The last answer really does exist». At first Javier thinks it is a stupid prank, but when Einstein’s biographer, who lives at the address written on the postcard, is murdered, he realizes that things are more than serious. A worldwide bestseller, already translated into twelve languages, published in Russian for the first time!