Lamentation - C.J. Sansom

Lamentation is the 6th book in the series and starts approximately a year after the events of Heartstone.

Shardlake (44) is taken into Queen's confidence and the adventure begins. Who (and why) stole Queen's manuscript?

Barak was not prominent in the first part of the book,

and I think he may be replaced with, Shardlake's new pupil, Nicholas Overtone if there are going to be new books. 

(show spoiler)