MALCOLM HELPS A SQUATTER ON "MALCOLM IN THE MIDDLE" SUNDAY, AUGUST 21, ON FOX

Malcolm discovers a man, Norm, living in the Lucky Aide. He agrees to keep Norm's secret as long as he provides Malcolm with tidbits on his new crush, a fellow Lucky Aide employee. Meanwhile, when Reese takes a job as an exterminator, he quickly learns that to drum up business he must infest the neighbors' lawns, and chooses caterpillars as his weapon. But instead of spreading the caterpillars, he has a change of heart and begins to nurture them, ultimately leading to his own menagerie of butterflies on the MALCOLM IN THE MIDDLE episode "Butterflies" airing Sunday, Aug. 21 (7:00-7:30 PM ET/PT). (MIM-616) (TV-PG)

Cast: Jane Kaczmarek as Lois, Bryan Cranston as Hal, Frankie Muniz as Malcolm, Justin Berfield as Reese, Erik Per Sullivan as Dewey and Chris Masterson as Francis.

Guest Cast: Dan Butler as Norm.