The Tyr Books in Order

Former corporate soldier Daniel Clay studies the alien Tyr with his wife and son, living secretly among them. When their employers send an invasion fleet instead of replacements, the family must help the Tyr resist without exposing themselves to either side.

As corporate invaders overwhelm the Tyr, Daniel Clay and General Fastal seek a weapon capable of changing the war. Sarah pursues an infiltration mission among uncertain allies, while their son struggles to survive among refugees without revealing his identity.

The Clay family pursues a final plan to save the Tyr from extinction. Sarah infiltrates enemy territory with uncertain allies, while David carries a device that might sever the invaders’ reach as traitors hunt him down.