The Sixth Wicked Child
by J.D. Barker

The Sixth Wicked Child by J.D. Barker is the third and final book in the 4MK trilogy (4MK = Four Monkey Killer).

Wow!  I honestly can’t believe that this trilogy has come to an end.  It was incredible to hunt down 4MK alongside Detective Sam Porter and I am SO satisfied with how the series ended.  However, part of me is scared to write anything about this book, or series, because I fear that my words will not be able to do it justice.  So, even if my words fall short, I invite you to look up the first book The Fourth Monkey, read a bit about it, and hopefully give it a chance.  I will say, if you are a fan of Criminal Minds, this is definitely a series to consider, as it is really dark, twisted, and horrifying (but in a fun way, I promise!) like the show.

Now that I have finished the series, I find it difficult to review aspects of this book without also discussing the previous ones, as the events that unfold in the last book are linked so intricately to what happens in the first two.  For that reason, I will not discuss the plot, as I do not want to spoil any part of these books for you!

BUT, I will say this: this entire trilogy follows Detective Sam Porter, and his team at Chicago Metro (Brian Nash, Clair Norton, and Edwin Klozowksi), as they hunt down the identity of the Four Monkey Killer (4MK), who has been terrorizing the residents of Chicago for over five years (If you would like to read the synopsis for the last book, you can find that further down!).  Each book transitions beautifully into the next one, with insane twists and cliff-hangers that will absolutely boggle your mind.  I did not expect any of them of the twists that happened (you can check out my immediate reaction and thoughts about the second book, The Fifth to Die, here)!  For that reason, be sure to have the next book handy, as waiting to read the next instalment (like I did, both times ?) is complete torture.

Though the books are long and look a bit daunting, they read so quickly because there is something about Barker’s writing that completely captivates you; it pulls you in from the very first page and keeps your attention until the very last.  These books are made up of short chapters that mostly end on suspenseful cliff-hangers, which helps with the readability of each of the books.  The chapters are also told from different perspectives, shifting between the detectives, the missing victims, and even the voice of the serial killer himself in a diary that is left behind on the body of one of his victims.  I’m not going to lie, although they are extremely unreliable, these diary chapters are my absolute favourite because they detail events of the killer’s childhood that help to explain why he is the way that he is.  I just loved reading about this killer’s twisted past.  I’d also like to add that Barker’s characters are brilliant because they feel so real.  I am going to miss them terribly.

To end, J.D. Barker is simply a brilliant writer.  His ability to lace together minute and intricate details across all three books is just astounding.  I can’t even begin to imagine how he even started to write these books or keep track of everything. They are just brilliant.

Please be warned though, each of these books are graphically violent. Because of this, these books might not suit all readers! Again, I urge you to check them out and decide for yourself.  BUT, if you love thrillers and want to be drawn into the mind (and past!) of an absolutely disturbing serial killer, you will love them.

You can read the full synopsis below!



For Detective Sam Porter, the words “Father, forgive me” conjure memories long forgotten; a past intentionally buried.  For Anson Bishop, these three words connect a childhood to the present as he unleashes a truth concealed for decades.


Found written on cardboard near each body, these words link multiple victims to a single killer—discovered within minutes of each other in both Chicago and South Carolina—clearly connected yet separated by impossible miles.


Chicago Metro and the FBI find themselves caught in chaos—a hospital on lockdown, a rogue officer, and corruption at the highest levels.  When Anson Bishop, the prime suspect in the notorious 4MK serial murders turns himself in, he reveals a story completely unexpected, one that not only upends the current investigation, but one that will change the lives of all involved.


With unrelenting tension and pulse-pounding suspense, the past unravels at breakneck speed as the truth behind the Four Monkey Killer’s motive is finally revealed in this masterfully crafted finale.


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