Jesse Henecke

Nora recruits the family to help her rehab her new property; Sarah is conflicted with the return of Graham - who shows up as a potential investor for her new company - as it seems his decision to invest is linked to his desire to be back in her life.

Lem flips out when his mother (guest star Khandi Alexander, "CSI: Miami"), a brilliant scientist who has always intimidated him, comes to visit and begins an affair with Dr. Bhamba (Maz Jobrani). Meanwhile, Ted gets miffed when Linda suddenly gets all the credit after she makes a suggestion to improve on his prize project, a light bulb that burns forever.

Mark attends his high school class reunion and learns that some memories are bittersweet for his old friends.