Another Last Flight For Craggy

Number 2 in the series. Mars continues to turn green and the population is growing like topsy. Stella Wayward finds information on the Varlindran's ship's computer, which is bad news for all of them. It becomes top priority to prepare for all out war, but with resources stretched to the limit, life becomes hard just to survive.
Humans have to be at their inventive best to be ready to defend their new home at all cost. Craggy is in high demand with his logical problem solving skills, but there are surprises ahead even he wasn't prepared for.
And the big question is, just how many enemies do the Humans have?