A Brushstroke with Death

Near the creek that runs behind her Pennsylvania house, Willow Bellamy has converted an old barn into an art school—though the place does still have some animal inhabitants, including Rembrandt, the owl who lives up in the rafters. And while it’s important for any artist to have a vision, Willow can sometimes see things others can’t, just like her mother and grandmother before her. Not that she would exactly call herself a witch . . .

When some local merchants gather in the studio for a pa...