Books in the The Cogheart Adventures series

Lily's life is in mortal peril. Her father is missing and now silver-eyed men stalk her through the shadows. What could they want from her? With her friends - Robert, the clockmaker's son, and Malkin, her mechanical fox - Lily is plunged into a murky and menacing world. Too soon Lily realises that those she holds dear may be the very ones to break her heart... Murder, mayhem and mystery meet in this gripping Victorian adventure.

When infamous escapologist Jack Door breaks out from Pentonville Prison, he sets out for the town of Brackenbridge, determined to find his missing treasure - the Moonlocket. But when Lily and Robert unwittingly find themselves caught up in Jack Door's search, they discover that Robert's history holds the secret to the Moonlocket's whereabouts...

When a travelling skycircus arrives in Brackenbridge, Lily and Robert can't wait to step aboard... But there's something sinister about the hybrid children who appear as part of the act. And before Lily and Robert can do anything, they're captured by shadowy figures and whisked off in the mysterious flying circus to somewhere far, far away...

Swept into the hustle and bustle of New York, Lily, Robert and Malkin discover shadowy secrets lie beneath its surface. For there are chilling goings-on in their hotel... A boy held captive, haunted by an undersea mystery; and a revengeful villain with a treacherous plan. Can Robert and Lily reveal the deadly truth before the secrets submerge them?