2/5 The Belgian sleuth is on hand when a death occurs in the heat of the desert.
BBC Radio 4 Extra
10/11 A killer hides in Glasgow's disused underground tunnels. Thomas Soutar investigates. (R)
BBC Radio 4
3/5 The sleuth digs for more clues. Is there a killer in a team of desert archaeologists?
4/5 As the Belgian sleuth continues quizzing the suspects, a second tragedy strikes the dig.