After reading "On mission", you were asked what's really happened Torch? These two books describe the events in detail.
You wondered what "Alignment Messan" has in mind for the various murders that dot the previous books behind a huge conspiracy? These two books gently lift the veil on what lies behind.
Therefore, the point as much action as usual. Place the machinations and intrigues behind why this happens in "On mission".
Ultimately these two books are not essential, but deliver additional information on events referred to in the main line of the Saga.
In short, any fan of the series should read. For others, it's your choice. It is not essential, but it's nice to read.
