This reader's personal opinion, ©2018, all rights reserved, not to be quoted, clipped or used in any way by goodreads, Google Play, amazon.com or other commercial booksellers* 

Well, this stayed unexpectedly action-packed start to finish so was fun (particularly when turning to the James Bond international espionage drawing in MI-6, CIA, FBI, NSA...).

I enjoyed the read.

Not sure it's what I'd consider Young Adult.  Lots of romantic possibilities with yummy men (not what I'd consider a love triangle, thank goodness -- but definitely a PG or less explicitness so maybe that accounts for the "YA"?  Lexi is an independent adult with degree, steady job, own home, not a teenager, not a 18-24 college student or new adult, not in any academy type of setting -- pretty much not seeing where this is YA.

Which is a good thing; YA is a love/hate for me with many great books but far more angst-y, clueless, high school-ish, and loveg ringlets.

Read for the booklikes' YA Book Club; I think it may have been just me unless someone has yet to join in or post.

*©2018.  All rights reserved except permission is granted to author or publisher (except Penumbra Publishing) to reprint/quote in whole or in part. I may also have cross-posted on The Reading Room, Libib, LibraryThing, and other sites including retailers like kobo and Barnes and Noble. Posting on any site does not grant that site permission to share with any third parties or indicate release of copyright.  

Ratings scale used in absence of a booklikes suggested rating scale:

★★★★★ = All Time Favorite 
★★★★½ = Extraordinary Book. Really Loved It.
★★★★☆ = Loved It.
★★★½☆ = Really Liked.
★★★☆☆ = Liked.
★★½☆☆ = Liked parts; parts only okay. Would read more by author.
★★☆☆☆ = Average.   Okay. 
★½☆☆☆ = Disliked or meh? but kept reading in hopes would improve.
★☆☆☆☆ = Loathed It. Possibly DNF and a torturous read.
½☆☆☆☆ = So vile was a DNF or should have been. Cannot imagine anyone liking.  (Might also be just an "uploaded" word spew or collection that should not be dignified by calling itself a "published book." If author is going batshit crazy in the blogosphere over reviews -- I now know why they are getting bad reviews.  Or maybe author should take remedial classes for language written in until basic concepts like using sentences sink in. Is author even old enough to sign a publishing contract or do they need a legal guardian to sign for them?)