Sheldon’s germophobia lands him in detention when flu season hits Medford and he takes extreme measures to remain healthy.
An unexpected announcement at Gaby's engagement party; a dead body in a home on Wisteria Lane; Susan makes a choice between Ian and Mike.
J.D. and Drew learn a tough lesson in mentoring when Dr. Cox and Lucy show them that the student is sometimes the teacher.
Erica, Barry, Geoff and the JTP go on a spring break trip and things are not what they expect. Meanwhile, Adam questions if college is for him when his test scores are not as good as he was hoping for.
Christine feels pressured to throw an extravagant party for Ritchie's ninth birthday, his first involving children from his new private school. Christine decides to have an arts-and-crafts party at her home--with mixed results.