A Touch of Treachery by Jennifer Estep

UNANSWERED QUESTIONS . . .
My name is Charlotte Locke, and I’m on a mission to capture my nemesis. As an analyst for Section 47, a secret spy organization, I use my magical form of synesthesia to track down paramortal criminals, but one villain keeps eluding me—Henrika Hyde.
Henrika claims to have answers about my father’s death on a Section 47 mission years ago, and she has also created a horrific new weapon capable of killing even the strongest paramortals, which makes her my number one target. Helping me is Desmond Percy, a powerful galvanist who is my partner both inside and outside Section 47.
Desmond wants to take Henrika down just as badly as I do, but our mission quickly goes sideways, and soon we’re surrounded by enemies on all sides with no idea whom we can truly trust.

A TROUBLING FUTURE . . .
The name Desmond Percy is well known inside Section 47, since I’m one of the organization’s top cleaners, aka assassins. Charlotte Locke and I have been tracking Henrika Hyde for months, and when we finally get a lead on her location, we jump at the chance to take down the weapons maker once and for all.
I’m determined to help Charlotte get the answers she is so desperately seeking, as well as taking my revenge on Henrika for killing my best friend.
But the deeper Charlotte and I dig into Henrika and her murky motives, the more dangerous our mission becomes. Henrika is playing her own spy game, and Charlotte and I are just the pawns she is using to achieve her own evil ends—caught up in a deadly legacy of treachery.