I picked 30 Pieces of Silver up because it's in my genre and the premise was intriguing. I start reading with the view that the book will be 5 star and then deduct a star or two or three as I read. By page ten of this book it had already dropped 1/2 of the first star due to a lack of verisimilitude.
In the jungle, surrounded by natives, the book's heroine, Dr. Rebecca Monroe, is tied to a stake with a thirty-two foot anaconda tightly wrapped around her from ankles to neck. She is saved by a group of special forces soldiers, led by hero Sergeant Brandt who, with the help of one of his men, pull the snake off of her. I find that hard to believe. They strained a bit, sure, but anything short of chopping or shooting the head off is not going to get a hungry and or agitated anaconda of that size off its prey. I also had trouble believing that an SF team of only four is led by a Sergeant (the lowest of Non-Commissioned Officer rank). A Special Forces "A Team" is 12, led by an officer with two senior NCO's (Master Sergeant or Sergeant Major) and the rest of the team are senior to mid-grade sergeants. Anyway...
Shortly thereafter, a long firefight between the SF soldiers, sent to rescue Dr. Monroe, and a group of cultists (The Knot) is so unbelievable that I almost put the book down. Ms. McCray may have consulted someone for the battle scenes; unfortunately, whomever it was (if there was a consultant at all) hasn't a clue. Even worse the entire book is chocked full of battle scenes, an airplane crash, bombs in underground caverns; each of which reeks of a lack of knowledge about weapons, bombs and chemical 'poison gas inhalants'. Naturally, the protagonists always survived... oh, and the antagonists, as well. At least until the end.
The end is, thank goodness, exactly as advertised... shocking, astounding, remarkable (pick the adjective). Still, I had to struggle to get there.
If you like "Indiana Jones" or "Mission: Impossible" scenarios and grand (unbelievable) escapes, you might like 30 Pieces of Silver.
Bottom line: Ms McCray is a very good storyteller when she's writing about something she knows; the geography, religious and general history, descriptions of churches, cathedrals and mosques all across eastern Europe and Southwest Asia. She could also use a better editor, but I didn't rate that part of the book.