Emma Degerstedt

When Sheldon meets Dennis, a 15-year-old physicist who is clearly much brighter than he is, his confidence is so badly shaken that Leonard agrees to help him discredit the precocious teenager's research.

Samantha bumps into a former boyfriend of hers while on a walk, who then proceeds to run away from her; Samantha later learns from Andrea that he has a restraining order against her; Samantha feels the need to reconnect with her father.

Addie Singer looks forward to unveiling her new image on the first day of seventh grade.

Addie is insecure about her hair on school picture day.

Addie is determined to win first place in the school talent show with Jake's help. However, when Jake bows out to take part in an old friend's magic act, a jealous Addie decides to crash the show.

Addie draws up an honesty policy for her friends.