Divided in death. J. D. Robb. 2004.

Doubleday Book Club edition
Approaching her cheating husband and lying best friend, Reva Ewing is bent on revenge. But somebody got there first. In a desperate fight to prove her innocence Reva calls on the only man she can trust: Roarke, the billionaire husband of Lieutenant Eve Dallas.

But the truth is messy: a complex artist, a long-lost brother, a deadly computer worm designed by terrorists - Eve and Roarke are dealing with a deeply volatile case where no one trusts a soul and everyone has their eye on a prize. 

And the murder is far from what it seems………