The House of One Hundred Clocks - A. M. Howell

When Helena's father, a clock-winder, accepts a new job, they have to move to Cambridge and move into the house in which he is to work.  However, when they arrive, they discover many more clocks than they'd expected; in fact, one hundred clocks of all shapes and sizes fill the rooms, and it's Helena's father's job to keep them running, for if just one of them should stop, not only will he lose his job but also everything they own.

Very quickly, Helena, along with her parrot, Orbit, discovers that all is not as it seems and there are secrets lurking, but can she work out what they are before the clocks stop ticking?

A great story that builds to an exciting finalé (I read the last third of the book in under 2 hours!).  There are plenty of questions posed to keep readers guessing and characters who aren't quite as they may seem.  I liked the strength of the female characters and the message that girls can do whatever they want - the links to STEM are also a great message to send out. 

The House of One Hundred Clocks is a book about friendship and remembering the importance of family.