# Sierra Six

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![Sierra Six](https://quivercdn.com/covers/sphere/mark-greaney/sierra-six_978-07-5157-849-2.jpg?v=2026-05-08%2015%3A03%3A32)

- Book: [Sierra Six](https://www.bookquiver.com/mark-greaney/sierra-six) ([Sierra Six.md](https://www.bookquiver.com/mark-greaney/sierra-six.md))
- Authors: [Mark Greaney](https://www.bookquiver.com/mark-greaney)
- Publisher: Sphere
- Medium: ebook
- ISBN: 978-07-5157-849-2
- Published: 2022-02-15
- Language: en_GB
- Binding: E-book

## Description

A TERRORIST BACK FROM THE DEAD. A DEBT TO BE PAID. Before he was the Gray Man, Court Gentry was Sierra Six, the junior member of a CIA action team. In their first mission they took out a terrorist leader, but at a terrible price - the life of a woman Court cared for. Years have passed and now The Gray Man is on a simple mission when he sees a ghost: the long-dead terrorist, but he's remarkably energetic for a dead man. A decade may have gone by but the Gray Man hasn't changed. He isn't one to leave a job unfinished or a blood debt unpaid. ------- 'I love the Gray Man' Lee Child 'So propulsive, the murders so explosive, that flipping the pages feels like playing the ultimate videogame' New York Times