Sharee Stover 
Untraceable Evidence 

Someone’s after a deadly weapon-and the scientist who created it-and only she can stop them . . .It’s undercover ATF agent Randee Jareau’s job to make sure the government’s 3-D printed "ghost gun" doesn’t fall into the wrong hands. So when someone goes after scientist Ace Steele, she must protect him . . . before she loses the undetectable weapon and its creator.But with a mole inside Ace’s company and everyone a suspect, this assignment could become Randee’s last . . .