Sam Briger

Rachael & Vilray first met in 2003 when they were students at the New England Conservatory of Music in Boston, but didn't begin performing together until 2015. Now they are the duo Rachael & Vilray and they play original songs inspired by the music of the 1930s and 40s. They'll talk and sing in the studio.

Mudlark author Lara Maiklem scours the edge of London's River Thames looking for historical artifacts. Among her finds: Roman pottery, medieval jug handles and a 500-year-old child's shoe.

"Acting allowed me to channel this neurosis into a character," Harbour says. He plays the skeptical police chief of a sleepy town besieged by supernatural events in the Netflix series.