Readers generally find My Sister, the Serial Killer to be a fast, highly accessible read, with short chapters and direct, uncomplicated prose that keeps the story moving. Many appreciate its blend of dark humor and psychological tension, as well as the portrayal of a complicated sibling relationship and glimpses of everyday life in Lagos.
The book’s central moral conflict is often considered more compelling than its thriller elements, and several readers enjoy its sharp, occasionally morbid tone. However, some find the characters difficult to like, the emotional depth limited, and the overall experience closer to a soap opera than an intense crime thriller. A few readers also feel that it leaves little lasting impression, while others find it consistently entertaining and especially suited to those looking for a brief, unconventional, darkly comic read.