This is a continuation of book 1 (they really should have been 1 book IMO). Steph and Jake both have moments where they don't trust the other. I didn't think much of the moment Steph didn't, because, hey it made sense. Either way, they talked about it and moved on. Jake's moment, on the other hand, I didn't like and I thought Steph handled it well.
Overall, this was decent, pacing is good and the "chase" is well played. The thief doesn't change throughout the book, even though there was a brief moment where I thought it could have been someone else. I do think this and The Sapphire Affair should have been 1 book. I think it would have worked better combining the 2.
Both of the books are available through Kindle Unlimited.