A Fatal Lie by Charles Todd
Publication Date: February 16, 2021
Summary from NetGalley:
In one of his most puzzling cases, Scotland Yard Inspector Ian Rutledge must delve deep into a dead man’s life and his past to find a killer determined to keep dark secrets buried.

A peaceful Welsh village is thrown into turmoil when a terrified boy stumbles on a body in a nearby river. The man appears to have fallen from the canal aqueduct spanning the valley. But there is no identification on the body, he isn’t a local, and no one will admit to having seen him before. With little to go on, the village police turn to Scotland Yard for help.
When Inspector Ian Rutledge is sent from London to find answers, he is given few clues—a faded military tattoo on the victim’s arm and an unusual label in the collar of his shirt. They eventually lead him to the victim’s identity: Sam Milford. By all accounts, he was a good man and well-respected. Then, why is his death so mysterious? Looking for the truth, Rutledge uncovers a web of lies swirling around a suicidal woman, a child’s tragic fate, another woman bent on protecting her past. But where among all the lies is the motive for murder?
To track a killer, Rutledge must retrace Milford’s last journey. Yet death seems to stalk his every move, and the truth seems to shift at every turn. Man or woman, this murderer stays in the shadows, and it will take desperate measures to lure him—or her—into the light.

ARC provided by William Morrow via NetGalley for an honest review.
Confession:
If you enjoy historical mysteries, especially those set in England, then this is a series you need to add to your list. I highly recommend that you start with book one, A Test of Wills, as that explains Ian’s past with Hammish the best. After that you really don’t have to read them in any particular order. Even after 23 books, this series is going strong, and should continue to be exceptional to the end.