This chapter explores the Brezhnev-era ‘biography boom’, when biography was collected, consumed, and critiqued with extraordinary interest, thanks in part to ‘Fiery Revolutionaries’ as one of the most prominent and prolific biographical series. This biography boom grew out of the post-Stalinist shift to more private forms of reading and more psychologically sophisticated literature, and was supported by developed socialism’s unprecedented ideological focus on the individual personality (lichnost′) as multi-faceted. The series served as a laboratory of different models of ‘revolutionary’ selfhood, and as a forum for novelistic experimentation with biographical narrative that often exceeded contemporary developments in the genre in the West (as well as in other types of Soviet biography). However, this experimentation endured onerous suspicion and interference. The series’ texts were caught between traditional views of revolutionary identity and more innovative, even subversive, explorations of psychology and ethics. This helps to explain why the series consistently produced a significant quotient of much more conventional biographies, especially of Bolsheviks, complicating its identity for writers, critics, and readers.