The series begins with The Fourth Monkey , a novel that critics often compare to iconic thrillers like Se7en and The Silence of the Lambs . The story follows as he hunts a serial killer known for sending "gift boxes" containing the ear, eyes, or tongue of his victims—mirroring the "See no evil, hear no evil, speak no evil" proverb.
: This is the first book in a trilogy that includes La quinta víctima and La sexta trampa . Trilogía El Cuarto Mono, Vol. 1 - Amazon UK jd barker el cuarto monom4a better
Although originally a trilogy, the series is expanding as of 2026. Book Order Spanish Title English Title Release Year El Cuarto Mono The Fourth Monkey La Quinta Víctima The Fifth to Die La Sexta Trampa The Sixth Wicked Child The First Scarlet Door III. Media Formats and Quality J.D. Barker answers your questions — Ask the Author The series begins with The Fourth Monkey ,