Yemi returns to London accompanied by William but she starts to see familiar faces following her and runs off. William and Douglas visit a traditional healer for information. He confirms the rumors that some practitioners of muti, a traditional form of healing, may be using human rather than animal parts, but that's all he knows, rumors. Back at the university meanwhile, Megan starts to receive e-mails from someone warning them all that they are being watched. Douglas makes a connection to a well-healed businessman with connections to Africa and perhaps to Yemi's father.

• David Kane

• Bill Paterson
• Lucy Griffiths
• Peter Guinness