The book "Hell" by Dan Brown

The book's heroes follow the terrifying message of a talented scientist obsessed with saving the Earth and humanity. The American professor and his resourceful companion desperately seek salvation in the magnificent cities of Florence, Venice, and Istanbul. Will their efforts be in vain? The novel presents a constant quest and flight: Dante Alighieri's Inferno, the Hell, periodically appears before the reader, not only in the lines of the Divine Comedy that serve as passwords, but also in the paintings of the greatest masters of the Renaissance.