The Merging — Oliver Eade

Continuing from the Golden Jaguar of the Sun, Adam Winters and María López believe their troubles are behind them. But... how could Adam have guessed that his sister's sixth sense would transport him and his girlfriend back to 13th century Colorado, let alone become part of an ancient Puebloan prophecy? To fulfil the prophecy, he must confront Coyote Spirit. Does Adam have the strength to release the only power that can defeat his adversary?
In this second book of the From Beast to God YA trilogy, the young Texan learns who his greatest enemy really is but gets no closer to discovering why his Mexican girlfriend is so special.
A continuing story of young love with its challenges and uncertainties against a backdrop of merging cultures and beliefs, whilst manipulation of the youngsters' destinies by outside forces threatens more than just their futures.