A Song for the Dark Times (2020) is the 23rd Rebus book by Ian Rankin.
I’ve read them all.
This one is as good as ever. Despite Rebus being long retired. I said goodbye (the first time) in 2007 with Exit Music.
Rebus had to move to ground floor residence as he can no longer do stairs. And he keeps his inhaler at the ready.
Brexit looms. But there’s no talk of COVID-19.
When his daughter Samantha calls in the dead of night, John Rebus knows it’s not good news. Her husband has been missing for two days.
Rebus fears the worst – and knows from his lifetime in the police that his daughter will be the prime suspect.
He wasn’t the best father – the job always came first – but now his daughter needs him more than ever. But is he going as a father or a detective?
ianrankin.net

My brother Randy linked to this video of a recent discussion of aging characters: Rebus v Harry Bosch.
Click PLAY or watch it on YouTube.