Michael Patrick McGill

Howard and Sheldon bond over their disappointing fathers. Leonard becomes uncomfortable when his mother befriends Penny.

When one of the CSI's most notorious enemies is killed, Horatio is forced to look at his team for suspects.

April and Leslie try to get more women hired in government; Tom asks Ben and Andy to teach him about basketball; and Ron watches Diane's kids.

A toast at Roy's wedding makes Pam and Jim search their relationships for buried secrets; Dwight reacts to Nellie's mandatory charity initiative.

Alan and Kandi find themselves in a custody battle over their dog, Chester. Meanwhile, Charlie tries to offer Jake some helpful advice about his relationship.

After a woman comes to Bunker Hill with a mysterious lung ailment, James ties other respiratory cases in her area to possible contamination from a microchip factory; a man struggles to walk despite his legs being in good condition.