2/6 The detective witnesses the aftermath of a crime, and gets a hostile welcome in Germany.
BBC Radio 4 Extra
3/10 Robert invites George to meet his uncle's young wife. But she's reluctant to receive them.
3/6 In Germany, the Roman sleuth learns the legion's legate Gracilis is missing.
4/10 With George missing, Robert heads to Southampton, but the answer lies at Audley Court.