Blood of the Vine

The Sulphate Sprayer Massacre (5x1)

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Swiss investment banker insists that Lebel must assess a Chateauneuf-du-Pâpe estate, once reputed, slipping since the later owner Castelnaut's daughters fired wine-maker Francis Ollier, who now runs a friend-partner's smaller estate. Benjamin rightly suspects the supposed reason given by the only rich heiress-sister, Kate Weller, who returns from abroad, is a front, and starts digging in the murky family and staff history even before vineyard sabotage and murder strike.