Shadows Strike
This is Ethan and Heather's story. Heather is a telepath and has been able to turn that into a career- as a FACS specialist (reading facial expressions and body language to determine if someone is lying. The other couples from previous books all make appearances. The underlying storyline with Gershon trying to start WW 3 is continued. New allies appear.
(show spoiler)I read this for Romance-opoly Fang Alley moon track