Known to the public and Chicago Metro as 4MK (the fourth monkey killer), a serial killer has unleashed havoc on the city by abducting young women and sending their ears, eyes and tongue to their loved ones before eventually killing them. His MO has been the same: he cuts off these parts in particular to represent the Japanese proverb of see no evil, hear no evil, and speak no evil. Not many people know that there is a fourth monkey that represents “do no evil,” and this is why he has been given the nickname of 4MK.
When a man is hit by a bus, killed, and had been carrying a package with an ear, Chicago Metro detectives Porter and Nash believe they go their man. But there is still a missing girl out there they need to find before it’s too late.
Besides the ear, the 4MK left behind a diary chronicling his dark upbringing. The book alternates chapters between the race to find the missing girl and their journey into 4MK’s past.
I absolutely loved this book because it was super suspenseful and kept you guessing. The ending wasn’t fully resolved, which is a perfect set up for a series. However, it is important to note that the distributing details of graphic violence might not be to everyone’s taste.