The Magical Worlds of Frances Harding. The Spider's Gift

Every resident of Reddish risks being cursed. Any stranger is under suspicion. The egg of the curse ripens in the soul of the one who curses, soaking up hatred until they are ready to unleash it on a victim. And then the cursed has only one chance for salvation. Kellen is capable of unraveling curses. Thus, he saved Nettle, turned into a heron, and restored her human form. Now they travel together through Reddish, saving the inhabitants. One day, Kellen himself is cursed by someone, and all suspicion falls on Nettle... What if his unique gift is actually a curse?