Upon this Halloween the staff of the SCMP gather around a candle-lit microphone to tell some of Hong Kong's legendary ghost stories. Hear about the curse of the Seven Sisters, the haunted movie soundtrack that Hong Kong radio DJs call 'the Forbidden Song', the Girl with the Single Braid and the legendary tale of the Congee Delivery Boy and the Headless Mahjong Party. Presented by Kinling Lo, with voice talents from John Carter, Gigi Choy, Zinnia Lee, Brian Peach, Heidi Yeung, and Nadeem Shad…