Keepers of the Stone/Voyages of Fortune

A trained killer. A demonic Order. A jewel that could change the course of history.
An orphan raised by a fanatical Sect of thieves, Malka has already sacrificed the lives of her people to protect the object she carries. Having become its unwitting guardian, she is forced to flee British India for the American West. Her immediate goal? Keep the Urumi's demonic Order off her trail and avoid being taken into the ranks of its enslaved members. But – even with her superhuman combat abilities and the aid of a mysterious shapeshifter – doing so will prove tougher than she could've possibly imagined.

Stas is about to go on an adventure of his own. The courageous son of a Polish refugee learns he is being sent home to a continent he has never visited. But, even as he begins to grapple with his new environment, the Order of the Urumi sets it's own plans in motion for Stas, placing his closest friend, Nell, in great danger. He is forced to embark on his own perilous journey if he is to have any hope of saving her.

Trapped in unfamiliar parts the globe and confronted with mystical arts they do not understand, Stas and Malka must struggle to find allies, battle the Urumi and uncover their common path to the stone's cataclysmic final purpose.

Whether they know it or not, an epic quest has just begun....

The Keepers of the Stone trilogy is a soul-searching, action-packed adventure that will keep you guessing from its middle-of-the-action opening, right up until the end. 

Divergent times. Distant lands. Different missions. One gambit.

In Austro-Hungary, 1898: a sickly girl discovers a bundle of instructions addressed to her by a legendary nobleman. He entrusts her with a powerful ring and mission to protect the world from the ambitions of both factions of a mystical power struggle. It will require her to embark on a quest that will cause her own culture to reject her; the girl knows she has to accept. Now an outcast, she must outwit the Society's and the Urumi's evil designs as she attempts to alter a series of magical devices that can give anyone the power to control the world. 

In Thailand, 2004: Mei Hua and Mark, two unvalued interns, are swept out to sea by a giant wall of water. They are rescued by a space-folding sailing ship, crewed by a gang of pirates. To survive, Mark and Mei are required to join forces with the mercenaries and fight to retrieve another powerful object that -- known only to the ship's enigmatic captain -- can make the world descend into chaos. Trapped on the strange ship, Mei and Mark must find it within themselves to keep this artifact from falling into the wrong hands – assuming they can determine whose hands those are.

In Russia, 1889: Natalia, the untested heir of her gypsy camp, finds herself in charge when her grandmother is abducted by an enemy her troop is not prepared to fight. The situation seems hopeless; from a secret buried deep in her past, Natalia knows it is her fault. Then a mysterious note from a sender she does not know offers an impossible way out – one that will doom her troop to slavery, or worse, if it fails. Natalia must find her inner courage and overcome the demons of her past if she is to lead her troop to salvation.
These are the Voyagers. Each believes they are working for their own ends. They are dead wrong. They have unknowingly become pawns in a centuries-spanning gambit to control time and the world itself. Their paths are about to cross. 
All that remains to be seen is: who is really about to take over?