Since you've asked for it, Law and Crucible Saga is free on Amazon for a few days:
1. No Port to Land http://www.amazon.com/dp/B017DT8LJM
2. Point of Origin http://www.amazon.com/dp/B017ERF84E
3. Bonds of Steel http://www.amazon.com/dp/B017ERSKTO
This the first time all three installments are free and it will probably be the last time as well so get it while it lasts!