Doctor Who: Black Orchid

England, 1925. The TARDIS materializes on a quiet railway platform where the Doctor, Tegan, Adric and Nyssa soon discover they are expected at an afternoon cricket match. And when the time travelers are invited to stay at Cranleigh Hall for a fancy dress ball, it isn't long before they uncover a terrible family secret. Who is murdering the servants and why? A rare flower may hold the answer.