RECKONING. by J B Turner.  Amazon Publisher.  
Nathan enjoying being free again, living in a crummy hotel.Advantage he could see his sister with his binoculars, of when she came outside.
A call, he didn’t want, “they were watching him”.they wanted him to return, they had Helen, his sister.  Payback, for how long .? Mark in Toronto doing an investigation piece. with the “Times” Files that Nathan had sent.  The first payback is to befriend Mark. The jihadist have there plan, will Nathan be involved. New series, love the flow of the plot, you know who  the players are. And now the mission, that will leave you wanting more. Would read the first book to know how he came to this point.  Given ARC by Net Galley and Amazon for my voluntary review and my honest opinion.