SALVATION OF A SAINT, by Keigo Higashino. Little Brown, 2013, 376 pp., £12.99 (hardcover)

When the pregnant lover of a murder victim receives the sympathetic ministrations from the deceased's wife at the funeral service, you know you are in no ordinary emotional terrain.

This novel by Keigo Higashino follows the tried and tested format of his international best-seller, "The Devotion of Suspect X," with detective Kusanagi, a gifted professional but with limited vision, confronted with a crime that appears to offer no implicating links to the prime suspect.