Complete story — includes the ending
When Lois and Hal find out about the most disgusting and terrible thing Reese has done yet (which is never revealed on-screen), they kick him out of the house. Francis tries to defend Reese and bring him home (without knowing what he did). Dewey enjoys trashing Reese's things and sleeping on his bed. Hal and Lois find that Reese's grades are improving and he takes care of himself, but then discover that he is also $11,000 in credit card debt. They drag him home and Malcolm narrates that she has spent over a month finding a suitable punishment for him.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Malcolm in the Middle season 5. HTML formatting and reference markers removed. · Content license