bone labyrinth book coverReviewed by Caleb Shadis

The Bone Labyrinth is the 11th book in the Sigma Force series. These stories are all international thrillers where things have to be saved/fixed quickly before something bad happens. In this installment several people are kidnapped and no one really knows why; since they have connections to the U.S. government, Sigma is sent to find them.

There are twin sisters who are using a government grant to do research into the emergence of human intelligence. Their primary experiment was Baako, a young gorilla that they genetically altered to try and affect the intelligence of the subject from birth. At 3-years-old, he was already showing great signs of much higher intelligence than other gorillas. One of the theories the sisters had was that crossbreeding with other hominids in our past created a mixture of genes that allowed humans to become superior over either species.

Lena, one of the sisters, was in Europe doing some research when she was called to a new cave discovered in Croatia. This cave had many ancient artifacts, some with artistic sophistication way beyond what was considered possible. A unique skeleton was also discovered leading to a mystery, and the reason for Lena’s presence there. While being shown the site, it was attacked by unknown assailants who raided the site and kidnapped some scientists.

Maria, the other sister, was left at home to watch Baako. She is visited by Monk and Kowalski trying to piece together why someone would want to take her sister. More excitement ensues. Someone has some big plans for human genetic manipulation and they don’t care much about human rights or borders when it comes to getting what they want.

The Bone Labyrinth is another wild ride with the Sigma crew and world hopping to far off destinations. Overall, it was a fun book but similar to the others I’ve read. Those who’ve enjoyed previous Sigma books will like this one as well. The reason I didn’t rate this one higher is because I had trouble with suspending some of my disbelief in the latter half of the book when they started implying all kinds of things about a super smart race of humans in existence a long time ago. My understanding of history and evolution wouldn’t let me just go with the flow. But I still enjoyed the story and will likely try some more Sigma books as I run across them.

Rating: ★★★½☆ 

Caleb is a software engineer and amateur woodworker living in southern Minnesota. He has more hobbies than he has time or money for, and enjoys his quiet time reading.

Review copy was provided free of any obligation by William Morrow. No monetary or any other form of compensation was received.