On 5 August 2015, it was announced that Reece Shearsmith, Elaine Tan, Neet Mohan, Bethany Black and Paul Courtenay Hyu would have a role in "Sleep No More".
5 Ağustos 2015 tarihinde Reece Shearsmith, Elaine Tan, Neet Mohan, Bethany Black ve Paul Courtenay Hyu'nun "Sleep No More" bölümünde rol aldığı açıklanmıştır.