Peripheral People - Ylendrian Empire universe, #2

Corwin Menivie and Nika Santivan are decorated veterans of the Imperial Enforcement Coalition, and are perfectly capable of solving cases the old-fashioned way. When they're paired with Westley Tavera and Gavin Hale, the most powerful Reader/Ground team to emerge from the Psionics Academy, it could either be the best thing that's ever happened to crime fighting, or the makings of a quadruple homicide.
During a routine investigation, West's talent puts them on the trail of a brutal serial killer who traps his prey in a deadly mental playground. Then the killer starts baiting the team, laying psychic landmines at crime scenes and exposing IEC secrets. The strain of the case binds the agents closer together-so close that Nika and Gavin start sharing a room, and even the curmudgeonly Corwin finds himself as occupied with West as he is with the murders.
But as West's visions of death grow more violent, the only way out for all of them may be straight through the mind of a monster. If they're not careful, they may forget which side of the hunt they're on.