Paul Wilson

While Sheldon says a tearful goodbye to the final installment of “Fun with Flags,” Leonard, Howard and Raj search for something significant in a dead professor's research. And Bernadette is shocked to learn of her co-workers' true feelings from Penny.

When Geena learns that D.J. hasn't been taking Mary to church while she's been away, she insists they go as a family to uphold her traditional values. To make matters worse, Mary refuses to attend without her cousins Harris and Mark. Meanwhile, Mark's attempt to conduct an unbiased survey on the upcoming election for his school project goes south when Jackie volunteers to help.

Jake must solve a case while facing the facts about Leslie; the Doyle's try to adjust.