The Gilded Blade by Jennifer Lynn Barnes

Everyone is a player. In the grandest of games, there is everything to win – money, love, power, revenge – and even more to lose.

Every clue pulls them deeper. From Texas to Prague to London and beyond, the Hawthorne family and their allies old and new are drawn into a web of centuries old secrets and mind-bending puzzles. Every answer demands a price.

To survive, they must unravel the mysteries that bind them together . . .