The Water-Irises — Hayden Thorne

Hugh LaCaille's quiet, scholarly life is interrupted one day by a wealthy but obnoxious businessman who hires Hugh as a tutor to his young son. Ignace Fournier is incensed Aubin's passion for nature and poetry is a threat to his dream of seeing the boy grow up to be just as successful as his father in commerce. When Hugh finally meets Aubin, he realizes there's a great deal more than what meets the eye as far as the boy's concerned ... particularly his curious and outlandish stories involving a strange kingdom found at the bottom of a pond filled with water-irises.

The most alarming claim Aubin makes touches on a special friendship he's nurtured with the young ruler of that mysterious kingdom. Forced under time pressure to instill discipline into the boy, Hugh grapples with questions he's never before faced, and he finds himself looking deeper into his heart for difficult answers ... and even more difficult choices.