The adoptive father of Rill and Fern Foss (renamed May and Beth Weathers). Darren is a wealthy music composer who adopts the girls to help alleviate his wife, Victoria’s, pain after several miscarriages and stillborn babies. Darren and Rill bond over Rill’s musical talents, although they initially struggle to find common ground. After Rill and Fern run away to find their biological parents and then return, Darren welcomes them back with open arms.