Book Review | My Sister the Serial Killer

Book Review

My Sister the Serial Killer has been sitting on my shelves for months. It was a great fit for my Spookathon TBR, so I finally read it! It turned out to be perfect for a readathon because it was such a quick read.

(All reviews are spoiler-free unless otherwise noted.)


my sister the serial killer

When Korede’s dinner is interrupted one night by a distress call from her sister, Ayoola, she knows what’s expected of her: bleach, rubber gloves, nerves of steel and a strong stomach. This’ll be the third boyfriend Ayoola’s dispatched in, quote, self-defence and the third mess that her lethal little sibling has left Korede to clear away. She should probably go to the police for the good of the menfolk of Nigeria, but she loves her sister and, as they say, family always comes first. Until, that is, Ayoola starts dating the doctor where Korede works as a nurse. Korede’s long been in love with him, and isn’t prepared to see him wind up with a knife in his back: but to save one would mean sacrificing the other…


I’ve read a decent number of thrillers in the past few years, and My Sister the Serial Killer was unlike any of them. I almost hesitate to call it a thriller, because there was almost no suspense. A thriller without that sense of urgency to keep you turning the pages honestly felt strange. Especially because the story wasn’t boring (I mean, there is a lot of murder).

I feel like I had a weird relationship with the characters in this book. I was not a fan of Ayoola, but mostly because she’s the kind of person I dislike in real life. If you’ve ever met those people who get everything in life handed to them (probably because they’re beautiful), but are genuinely awful people, you already know Ayoola. Though she’s probably more awful than most, because she is literally a serial killer. I almost disliked Korede more, because she enables her terrible sister. She says it’s for love and because family comes first, but not once in this story does Ayoola seem to return her sentiment. I just wanted to slap some sense into these people.

(Skip the next paragraph if you want to avoid spoilers)

Ok, spoiler time. I am a fan of open-ended stories, or books that end in unexpected ways. But I was absolutely not on board with Ayoola getting none of the karmic evil that should have been heading her way. Which made me hate Korede even more. Because not only does she protect her murderous sister, she keeps doing it even after she steals the man Korede has been crushing on, tries to murder him, and then pretends to be a victim when she fails. This book made me angry, and I got no satisfaction at the end. Spoiler-y rant over.


★★★☆☆ – Overall, My Sister the Serial Killer was an interesting, albeit unsatisfying thriller. I liked the premise and the setting, but it did leave me wanting more. On the bright side, it is pretty short.

My Sister the Serial Killer is available in bookstores (and on Amazon) now!

To get the audiobook for free, use this link to sign up for a free trial of Audible and choose My Sister the Serial Killer as one of your two free books.

*This post contains affiliate links, which means I may get a small commission for purchases made through this post.*

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