Recently widowed Agnes Lockwood is spending a few days on Tyneside in Northeast England, catching up with her past.
But after only a few days at the hotel, an expensive item of jewelry is stolen. When more jewelry goes missing, Chief Inspector Alan Johnson gets on the case. After Alan recognizes Agnes as a friend from schooldays and they rekindle their friendship, Agnes begins bombarding him with questions about the case.
After dinner one evening, they find a body lying on the roadside. Fearing for her safety, Alan warns Agnes to stay away from the case: theft is one thing, but murder is something else.
But being an inquisitive woman, Agnes cannot resist getting involved... too involved.