Midsomer Murders S10E03 - King's Crystal

When a family glassware business collapses following the death of one of its partners, DCI Barnaby investigates allegations of financial irregularities, love triangles, and a string of murders. Lapsed Freemason DS Jones uses his inside knowledge to explore the ceremonial aspects of two killings, but it is Cully's production of Hamlet that gives Tom the key to the mystery.