User:Brambleberry of RiverClan/sandbox/A Hidden Enemy

A Hidden Enemy is a 2013 children's fantasy novel written under the pseudonym Erin Hunter. It is the second book in the Survivors novel series.

Publication history
A Hidden Enemy was released in hardcover and ebook format on 7 May 2013, the same day The Empty City was released in paperback.

Critical reception
Kirkus Reviews gave A Hidden Enemy a starred review, which was also given to The Empty City; the review said that the story was driven by "well-rounded characters, deep folklore, and difficult problems without obvious answers". Booklist said that the sensory details helped the story by bringing a "sharper focus" and "a greater feeling of reality", but that the "abrupt" cliffhanger ending would leave all but avid fans "jarred by the lack of a satisfying conclusion".