The Bastard from Fairyland (The Knights' Trilogy)

The world’s sea levels have risen and washed civilisation away. Survival is a constant compromise, made worse when the Fae invade; a cruel and sadistic race eager to turn humanity into slaves. Robin Goodfellow is an elite Fae warrior with a long life steeped in blood and his loyalty rewarded by betrayal. Now he lives among humans, growing bitter and lonely, and wants no part in the war. But Robin holds the key to victory for the Fae, the man who betrayed him demands his help and he’s brought Robin’s ex-lover along to ensure his cooperation. Trapped in the middle of the conflict and despised by both sides, Robin races across a flooded English landscape to rescue the two children who can help him make a difference. What he doesn’t know is that powerful members of the Fae are manipulating him to succumb to his psychotic alter-ego, Puck, who’s ready to cause even more bloodshed.