Tess and Jonesy clash when a man accuses his estranged wife of trying to kill his girlfriend by poisoning her breakfast jam. When they question the wife, she counter-accuses her husband of product tampering and extortion. Tess empathises with the wife, who is an independent woman like herself, running her own jam making business. Jonesy, on the other hand, feels the husband is misunderstood. Despite a product recall, the Heelers realise there is a second jar of poisoned jam out there somewhere which must be found before someone dies