Week 8: Trio Night The six remaining couples are prepping for a special night of dancing, in which they will perform two numbers – a regular couples dance and a special trio dance, in which one past season winner or finalist will be paired with each couple to compete. Details Casts Title Week 8: Trio Night Genres Family Reality Release Date 2017-11-06 Episode Runtime 01 Hours 30 Minutes Season Number 25 Episode Number 9 Production Companies Endemol Shine North America, BBC Studios, BBC Worldwide Productions Tom Bergeron Self - Host Carrie Ann Inaba Self - Judge Bruno Tonioli Self - Judge Erin Andrews Self - Host Len Goodman Self - Judge Sasha Farber Self - Troupe Dancer Jenna Johnson Self - Troupe Dancer Hayley Erbert Self - Troupe Dancer Britt Stewart Self - Troupe Dancer Artur Adamski Self - Troupe Dancer Brandon Armstrong Self - Troupe Dancer Keo Motsepe Self - Partner: Barbara ? Alan Bersten Self - Partner: Debbie G? Sharna Burgess Self - Partner: Derek Fi? Gleb Savchenko Self - Partner: Sasha Pi? Peta Murgatroyd Self - Partner: Nick Lac? Artem Chigvintsev Self - Partner: Nikki Be? Maksim Chmerkovskiy Self - Partner: Vanessa ? Cheryl Burke Self - Partner: Terrell ? Val Chmerkovskiy Self - Partner: Victoria? Emma Slater Self - Partner: Drew Sco? Witney Carson Self - Partner: Frankie ? Mark Ballas Self - Partner: Lindsey ? Lindsay Arnold Self - Partner: Jordan F?