After Andrew Ryan spreads a foliage-killing toxin throughout Arcadia, Langford discovers a possible breakthrough to her research on reanimating plant matter. To test her new-found theory, she needs a blossom from a Rosa gallica officinalis. After finding Jack at the entrance to her laboratory, she instructs him to retrieve the blossom from a nearby bush in the Waterfall Grotto. After receiving the rose, she confirms her theory and makes a note of the ingredients the solution would require. Her efforts to save the forest are cut short by her sudden asphyxiation at the hands of Ryan. Jack then finds her diary in the safe and sets out to find the missing ingredients: seven Enzyme Samples, seven jars of Distilled Water, and seven flasks of Chlorophyll Solution.