Salvo Montalbano and his men storm an old ruin to arrest Tano u Greco, a doddery killer who’s been on the run for 25 years.

A macabre discovery in a crypt must also be investigated.

The detective investigates rumours of a cache of arms hidden in a cave outside Vigata.

However, the site is also home to a secret chamber containing the remains of two lovers who were buried in a bizarre ritual after being killed at some point in the 1940s - but before Montalbano can find out more about his unusual discovery, he must confront the Mafia.

Salvo’s methods have repercussions for his best mate Mimì, long-distance lover Livia and especially for childhood pal Gegè, the pimp we met briefly last week.