Eitan Cohren, MIA - Kristian Clark and the American Agenda, #4

She's just trying to heal. He hates her for betraying him. Going undercover as a married couple is the worst idea ever. Eitan Cohren always knew what he wanted in life: to find and return Rhyan Perez to her father, his employer and mentor. But when he finds Rhyan with the help of Marina Ivanov, PI, he loses her all over again the same day thanks to the very woman he hired. Now, years later, he hasn't given up on his search.
And when an informant connects Rhyan to one Maxwell Columbus, Eitan takes a job guarding the mysterious Anechoic chamber for Columbus Senior. But nothing in Eitan's life has ever gone exactly as he hoped .