The Early Cybermen is an in-universe retelling of the history of the Cybermen. This volume is more of a pure retelling of events we have already seen in Classic Who, from the First and Second Doctors adventures. The author, and narrator, David Banks does a good job of putting everything in a chronological order. He adds little details here and there to really fill out the history. I rather enjoyed the way that this was done. Mainly for completists, I would also recommend this for fans of the