A complex biological and chemical chemistry spy mystery, infused with a lot of spying shenanigans and romance, putting a bit of zest into this story. Leaving our heroine with no choice but to solve the puzzling mystery fast, before there are more deaths. Bree Mayfield-Watson or Dr. Mayfield relationship with Matthew and James you can say is a complex one indeed, she is between a rock and a hard place literally speaking that is.
She is been nudged subtly by both parties into making a choice, but first, solving the mystery takes paramount importance, then she would decide. The storyline and the characters are okay, making this book an interesting read.