 In 1918 she published her first , and perhaps best , novel The Citadel of Fear ( Argosy , 1918 ) . This lost world story focuses on a forgotten Aztec city , which is " rediscovered " during World War I. It was in the introduction to a 1952 reprint edition of the novel which revealed for the first time that " Francis Stevens " was Bennett 's pen @-@ name . 
 In 1918 she published her first , and perhaps best , novel The Citadel of Fear ( Argosy , 1918 ) . This lost world story <a href='uninflect' title='1'><mark>focuses</mark></a> on a forgotten Aztec city , which <a href='drop_aux' title='2'><mark>is</mark></a>" rediscovered " during World War I. It was in the introduction to a 1952 reprint edition of the novel which revealed for the first time that " Francis Stevens " was Bennett <a href='null_genetive' title='3'><mark>'s</mark></a>pen @-@ name . 
In 1918 she published her first , and perhaps best , novel da Citadel of Fear ( Argosy , 1918 ) . This lost world story focus on a forgotten Aztec city , which " rediscovered " during World War I. It was in tdaintroduction to a 1952 reprint edition of thdaovel which revealed for thedarst time that " Francis Stevens " was Bennett  pen @-@ name .