I love the sci-fi aspect, and the different timelines, though the switch between them was confusing at times. It was almost a 4-star read because of Mr Kruz. I loved his character, and I wished we saw more of him. I liked how the book ended by mentioning him. 
I wish we saw more of the mom and sister. Sometimes it felt like they were only there for some conversation aspect. I liked how it picked up the pace at the end, but I found it odd how it took half the book for them to travel from one place to the next.
Some things I also found confusing were

the fact that no one in the house could drive?? and that they had to travel over 100 miles with a 3-bike renovation project?? the construction of it was also a bit confusing, but maybe that was just me.

 

 I felt like some of the travel was filler, but it was a quick read that was interesting and easy to understand most of the time. If you like problem-solving through stories, I recommend :)