- Frankie Muniz (Malcolm)
- Jane Kaczmarek (Lois)
- Bryan Cranston (Hal)
- Justin Berfield (Reese)
- Erik Per Sullivan (Dewey)
- Christopher Masterson (Francis)
Malcolm in the Middle — S5E19
Episode: Experiment
Air Date: 2004-05-02
Runtime: 22 min
Overview
When Dewey's annual candy selling event for school comes up, he uses the excuse of "these bars help support america" to sell them. Malcolm and Stevie attempt a science experiment, and are shocked when Reese begs to help.