The Boy From Reactor 4 is the first book in the Nadia Tesla series. These books are available to borrow for free on Amazon Prime. This book is a mystery/thriller that is a little weak on the thrills but did have some interesting cultural history.
Nadia is the daughter of two Ukrainian immigrants. She has solved her godfather's murder but now finds herself on the run from the criminal organization she uncovered. When she meets a stranger who knew her father, and he is shot dead in front of her, his last words lead her on a cross-country quest to solve a family mystery.
This is a fast-paced book and very much a series introduction. I wasn't involved by the characters or surprised by anything in the plot-line. I did enjoy the glimpses of the Ukrainian culture and of Chernobyl's exclusion zone after the nuclear fall-out. An unsurprising twist at the end will carry me on to read book 2 in the series.