Quantum Death (Koski & Falk Secret Agent Series)

In this fifth book in the Koski and Falk Secret Agent Series, Susan Koski and her partner Joe Falk take on their most complex and dangerous case yet: The Quantum Death Machine. After years of serving together across the globe, Koski and Falk are finally realizing their feelings for one another. Yet, in an unkind twist of fate, this case forces them to separate and face mortal peril alone and on their own for the first time. The deadly implications of The Quantum Death Machine loom over them as the agents finally come back together for the climactic battle between evil global forces and justice.