New York Times' best selling author- James Rollins brings forth to us The Sixth Extinction. It all started with a distraught call that ended with 'kill us all'. With the obvious need to investigate, it comes to the soldiers' notice that every living species in the lab was dead. Be it human beings, animals, plants, or even bacteria, there was no life found. With the help of an ancient map, and clues from threats of the past, Captain Grey Pierce and Sigma, aim to find a reasoning behind all this. Sigma's most important challenge is to stop the extinction of mankind. This book is sure to keep the readers on their toes as they die to find out whether Sigma accomplishes his goal, or ends with something catastrophic.