The 13th (2005) in the excellent Inspector Dalgliesh mystery series. The second most recent.
… Acclaimed novelist Nathan Oliver incurs the wrath of his fellow residents on Combe Island, a private property off the Cornish coast used as an exclusive retreat by movers and shakers in many fields. When Oliver is murdered, Scotland Yard dispatches Dalgliesh and two of his team to Combe, where the commander checks alibis and motives in his trademark understated manner. …
Amazon Review
Dalgliesh is stricken with S.A.R.S. in this one.

P.D. James is one of the best writers today, quality literature in the British tradition.
The detailed and ingenious plotting reminds me of some of the great BBC TV serials.
My Dad watches a lot of BBC. My Mom never misses Coronation Street.
It’s amazing how many older, even elderly, actors get work on British television, all seemingly stage trained. Normal looking people, most with crooked teeth.
On American TV being a model with no acting experience at all – but great teeth and hair – is sufficient to get you a role.