The Strangler Vine by M.J. Carter. Set in 1837 India controlled by the East India Company, two soldiers of the company go in search of a famous poet adventurer believed captured by Thugs. For people who like history, detective stories, exotic locations and customs, interaction between cultures, clever thinking and writing, and violence.
The Fellowship: the Literary Lives of the Inklings by Philip and Carol Zaleski. Well-written, engrossing take on C.S. Lewis and his colleagues. As good or better than Humphey Carpenter's The Inklings. Extraordinary chapter on the "Great War" between Lewis and Owen Barfield. Barfield was a theosophist and Lewis at the time an atheist and rationalist. Both of the men despised the other's mindset, yet they continued to converse with each other and take walking vacations with each other for thirty years. There's a lesson here somewhere for the CRCNA.
Life in God by Matthew Myer Boulton. For readers doing penance for squandering their beach time reading Daniel Silva and Brad Thor. Boulton's book is on Calvin's Institutes and — get ready for this — it's terrific!