Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Cogheart | 2016 | Peter Bunzl | Buy |
| 2 | Moonlocket | 2017 | Peter Bunzl | Buy |
| 3 | Skycircus | 2018 | Peter Bunzl | Buy |
| 4 | Shadowsea | 2020 | Peter Bunzl | Buy |
| 5 | Skugghavet | 2020 | Peter Bunzl | N/A |
The Cogheart Adventures takes place in an alternate Victorian England where clockwork machines and mechanical animals are part of everyday life. Cogheart (2016) begins when Lily Hartman’s inventor father goes missing, and she discovers that the clockwork heart keeping her alive makes her the target of dangerous people. Her mechanical fox Malkin provides both comic relief and loyal companionship throughout the series.
The five-book series builds its world with each installment, introducing airships (Skycircus) and underwater adventures (Shadowsea) alongside the original clockwork London setting. Bunzl’s books have been popular with middle-grade readers who enjoy fast-paced adventure mixed with historical atmosphere.