I feel like I need to start this review by saying sci-fi is not my genre of choice. The vast majority of what I read is historical fiction with the occasional fantasy novel thrown in for something different.
I read the first novel, Sleeping Giants, last August. For anyone interested in this series, I would recommend reading the two books a little closer together than I did. I ended up going to the library to check out Sleeping Giants because I had forgotten a few things. Keeping in mind that sci-fi is not my wheelhouse, I was surprised at the lack of sci-fi in the first one. Sure there was a giant robot and some big science-y words I didn't understand. Honestly, the giant robots aren't really that unbelievable and me not understanding science-y words is a fairly common occurrence.
The second novel amped up the sci-fi. The novel follows the format of the previous one. The writer uses a series of transcripts and diary entries to take the reader through the series of events that follow the appearance of a second robot. If that style of writing/reading doesn't appeal to you, I would skip this series.
Once the action started, I was a little concerned the writing style would take a little bit away from the plot. I was wrong. Once the action started, I didn't even notice. That second robot appeared in London (not a spoiler since it happens about two paragraphs into the book) and the book continues non-stop.
Does this series have me convinced I should make sci-fi a regular part of my reading rotation? Not quite. Am I going to read the third book? Yup. I already have it on order from the library. However, I might end up owning the series before the library can get them from me. An internet search from my husband shows the writer has been involved in some Star Wars works. Naturally his interest is peaked and I will run the risk of never actually getting my copy when it comes from the library.