Get the Summary of Oyinkan Braithwaite's My Sister the Serial Killer in 20 minutes. Please note: This is a summary & not the original book. Korede, a meticulous nurse, is entangled in her sister Ayoola's lethal habits. Ayoola, the younger and more carefree sister, has a history of her boyfriends dying under suspicious circumstances, which she claims are accidents or self-defense. Korede, bound by loyalty and fear, aids Ayoola in covering up these crimes, including the murder of her latest boyfriend, Femi...