Fever dream by Douglas Preston and Lincoln Child

In ten words or less: Pendergast's wife was murdered; he and D'Agosta track the killer.

Review: FBI Special Agent Aloysius Pendergast's wife Helen died in an accident in Africa twelve years ago. An excellent shot, Helen missed an attacking lion, and was mauled by the beast.
Accidently he discovers that her gun had been tampered with. Pendergast asks NYPD Detective Vincent D'Agosta to accompany him to Africa to track down Helen's murder. Their investigation takes them to the Pendergast family plantation in Louisiana and to Mississippi and Florida.
Just who is this woman I married, Pendergast begins to wonder. The enigmatic FBI Agent's personal life is laid bare in this action-packed adventure. Many of the past adventures have featured supernatural elements, but "Fever Dream" is a straight forward thriller, one of the strongest entries in the series yet. It's hard to imagine how the authors will top this.

Why bother? The mysterious Pendergast's past and personal history is revealed--or at least part of it is. Fans of the series will savor the latest from Preston and Child.