There's Something About a War - S2.E13

Dr. Ron informs Susan that she needs a splenectomy. Gabrielle and her arch-enemy Sister Mary Bernard finally face off in church.

Also, Tom decides to apply for an empty position at Lynette's job, which leads to the arousal of past issues in their marriage. Lastly, Matthew and Danielle's relationship is found out by both their mothers, which leads to big repercussions later on for Bree and her past secret with Andrew last year.