On Stenland, there comes a time known as skeld season: one day, any woman on the island can wake with three black lines on her forehead, the mark of a skeld. Skeld season comes around without warning, and while each window of time lasts only three months, anyone a skeld turns to stone is very much dead. That’s how Tess’s mother killed Soren’s parents. Tess and Soren cannot see eye to eye—and yet, they cannot stay apart.