Kal Spriggs

Hell Train (Hell Train, #1)

The Star Engine (The Shadow Space Chronicles, #7)

Maligned Valor

Valor's Exodus (Children of Valor, #9)

Loaned Valor (Forsaken Valor, #6)

Valor's Uprising (Children of Valor, #8)

Forsworn Valor (Forsaken Valor, #5)

Valor's Strike (Children of Valor, #7)

Common Valor (Forsaken Valor, #4)

Valor's Inheritance

For the Love of Death

Fenris Unchained

Odin's Eye

Hidden Valor

A Quiet Death

In Death's Shadow (Angel of Death, #1)

Vernian Space Gun (Army Space Corps, #1)

Stolen Valor (Forsaken Valor, #2)

Jormungandr's Venom

Lost Valor (Forsaken Valor, #1)

Dead Train

Valor's Cost (Children of Valor, #4)

Valor's Duty

Prisoner of the Mind (Project Archon, #1)