Beneath Swan Lake by H. N. DeFore

Never shoot the princess. Do not start the clock. Never get lost beneath the lake.

Odette never imagined her outing as a swan would be thrown off course by a shadowy arrow, shot by one of the four Grim Reapers of Mystica. When she crashes into the ruins of Tressa and comes face to face with Raymundo, he’ll have questions about her missing eye and the Blue Wizard stalking her every move across the land.
Reaper Raymundo never strays far from home very long, not with the weight of being the eldest of seventeen resting on his shoulders. Agreeing to bring the Swan Princess home to her parents is just another day in the life of a Reaper, until he discovers the dark secrets within the kingdom and the feelings only Odette can unearth.
As secrets of the past unravel, the evil hiding within Mystica can only grow. With one Reaper missing and the rest spread throughout the country, Ray will journey with Odette beneath Swan Lake and discover the secrets only the royal bloodline can access. Too many secrets overlap, and discovering what Lord Dima collected in his hidden house of horrors might just explain why the creatures of Mystica turn into monsters.
The clock is ticking, and the Queen is waiting…