"Something mysterious is killing the wildlife in the mountains just south of Tucson. When a college intern turned activist sets out to collect her own evidence, she, too, ends up dead. Local law enforcement is slow to get involved. That's when the mobile FBI unit goes undercover to infiltrate the town and its copper refinery in search of possible leads. Quinn and Costa find themselves scouring the desolate landscape, which keeps revealing clues to...

Pinkerton detective Miranda Hunt assumes another woman's identity in order to apprehend the Phantom, an elusive and notorious train robber thought to be hiding on the sprawling Last Chance Ranch. But she isn't the only one there with something to hide. Wells Fargo detective Jeremy Taggert is working the scene undercover as well. And although their true identities are a secret, it is impossible for Jeremy and Miranda to hide the spark that flares between...

Dilettante chef Angie Amalfi doubts if she'll actually survive her engagement to San Francisco homicide detective Paavo Smith, what with her meddling mom micromanaging the whole affair. So Angie leaps at the chance to spend some time away with her fiance in the sun-drenched Arizona desert town where he'd spent time as a boy -- and maybe explore the possibility of a Southwestern-themed wedding feast. But her groom-to-be is going back there to help...