[s4e15] Instinct -

: S4E15 is " The Milk Maker ," where Lisa's motherly instincts are tested by a brood of baby chicks.

: The Warehouse is physically expanding, but the process is causing malfunctions and "mishaps". [S4E15] Instinct

: Pete Lattimer and Myka Bering join H.G. to investigate if an artifact is causing these physiological changes, which seem to be reverting Purcell to a more primal, "instinctual" state. Warehouse B-Plot: Internal Expansion : S4E15 is " The Milk Maker ,"