My thanks to NetGalley and Amazon Crossing for the ARC copy. This has not affected my review at all, which are my own thoughts.
The Grown-Up is a chilling thriller about a disappearing mother that leaves behind two children, Lies and Luuk. Except, all her things, purse, phone, even car, at still at their home. So, where has Lies' mother gone? And why has she not say anything at all like she usually does? Lies believes her mother to be in danger, and she stops at nothing to find it, not even whatever half-trues and misinformation the adult in her life want to repeat every second she tries to confront them. And so, she makes her own investigation, finding things about her mother that she never confided in Lies even when they were the closest with each other. But this doesn't deterred her, on the contrary, it spurred her on to find the truth no matter what.
A short but intense thriller that delves in the psychology of motherhood, share parenthood, having divorced parents that can't stand each other and relationships formed by meeting strangers through date apps. It explores a toxic relationship between the mother an a possible-murder-lover, who calls himself God, that challenges everything she's learnt as a psychologist but also everything she believed about herself. While I think the relationship was quite toxic and people should run away from these situations, I can see the appeal that Lies's mother saw in the other man, why she would stay and, I must say, that said relationship (toxic, full of lust, romantic at times, demanding at others) was well-done. More over since we have the mother's POV be the one to directly tells us these things: their dates, her thoughts about him, her actions leading to the day she disappeared, how much she loved her children to the point she would never abandon them, not even for God, no matter how much they could have made the relationship work.
As we have both POVs, making theories up and reduce the suspects list at the same time, it's quite easy. Not like the list is that long, like the book, but we were given enough suspects and enough motives to keep us guessing until the very end, when the truth get revealed. My only complain with jumping between POVs is that, since the mother's POV was put as diary entries that Lies read over at her computer, I would have liked a better way to distinguish between them some times, because it was not clear until you got some detail that could only be attributed to one of the two.
Lies is an interesting character to follow, a teenager at 17 years old, she won't stop until she finds what happened to her mother and make whoever hurt her pay. This come from the close and emotional relationship the two women shared. And, at the end of the day, this is a thriller, a "what happened to this person?" type of story where, as usual, the police does the bare minimum and is other characters who have to find the truth; is a cautionary tale about dating trough apps and how, while it can happen safely, we have to be careful; but also, a story of love, mother-daughter love and how this relationships takes someone to extremes for the other person.
To sum up: I love been proven right about the culprit, and I loved this thriller, flying trough it in a few days, reading at any free minute I had because I wanted to know, wanted to find out if the mother lived or die and who might want to hurt her. The book does hit a couple of typical thriller points, so there's somethings you see coming from afar, but there's a lot of innovative things, and the characters that inhabit the story give it their own touch.
Completely recommend this one to thriller lovers and to anyone that might want to venture into the genre. Put this on your reading list, people, it won't disappoint!