This sounded great from the description, but about halfway through, it turned into one of those pathetic little horror movies where the girl is running from the indestructable and unstoppable bad guy, and I quit right there. It's not a YA story - the protagonist is a commendable 47 years old, but once she began behaving like a YA screamer girl (sans the screaming, thankfully) I had to get out of there. On top of that, the story was already plodding, to the point where I was starting to become bored and listless with the 'not going anywhere any time soon' plot, even before the idiot scene that proved to be the final straw for me.
Umiko Wada works as an assistant to a private detective, but after a visit from a mysterious and well-off woman, her boss is killed in a suspicious hit and run, and Umiko decides to pursue the dangerous investigation, hopping to London, the USA, and Iceland, but every time she moves, we get a crumb of a clue, and that's all. And naturally it's all tied to a bad event in her past because all these stories are.
Finally she heads to a mysterious property in the middle of nowhere on Iceland, and they take an inappropriate rental vehicle in bad weather. Magically their trip coincides with a visit from the bad guy, who kills her companion. Umiko commendably hits him with her vehicle, but instead of making sure he's dead and taking his own four-wheel drive vehicle while rendering her own unusable, she takes off in her own useless car, leaving the bad guy to inevitably resurrect and follow her. That was enough for me. It's so trope and it tells me the protagonist is a moron, and I have no intention of pursuing cliched novels about stupid women. I can't commend this based on what I could stand to plow through.