Complete story — includes the ending
Hal and Lois are penning their will, and think back to all the trouble their sons put them through. Hal forewarned against making out the will because he and Lois are not equipped for the task and wanted to go to a professional to make out the will. Lois' history with Francis is finally revealed and how her inability to admit when she is wrong lead to a lot of the problems the family has been dealing with.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Malcolm in the Middle season 4. HTML formatting and reference markers removed. · Content license