Wasps' Nest (S03E05)

During a visit to a garden fete, Poirot encounters a wasps' nest that heightens the atmosphere of unease. He runs into the son of a former acquaintance, accompanied by his girlfriend, a fashion model, and quickly senses they may be in peril. Poirot must unravel a tangled mystery involving cyanide, malfunctioning brakes, and complicated romantic entanglements. At the same time, Hastings pursues a new hobby that unexpectedly aids Poirot in piecing together the clues to solve the case.