The striking resemblance of Robbie's new friend, Marie, to Mary raises eyebrows among discerning Camdens. Annie's invitation for her to stay for dinner makes things weirder for them. Back in Buffalo, unbeknownst to Robbie, Mary accidentally bumps into her old boyfriend Wilson (guest-star Andrew Keegan) and his son Billy at the train station and makes plans to meet him for the evening. Mary is unsure on whether she should tell Robbie, but confides in her family about this. They all say that she should tell Robbie about this, but decides to ignore their advice. Also, Matt meets Robbie's ex-girlfriend, Cheryl, at the restaurant where she works. He starts to have feelings for Cheryl and tries his best to try to get her to go on a date with him. His efforts work by the end, but is having a hard time telling Robbie about his interest in his ex-girlfriend.

Jim Valenti breaks the news to the aliens and their friends that Alex was killed in a suspicious car accident. Max attempts to revive the already dead Alex, but sadly cannot. The gang must then deal with their overwhelming grief over losing their beloved friend. When the investigation into the car accident leads Valenti and Max to believe that Alex committed suicide by deliberately driving his car into the oncoming path of a truck, Liz blows up and refuses to believe it. Liz begins investigating on her own, finding a photo of Alex and his Swedish girlfriend defaced literally with Alex's head missing. But the weirdest clues are the passage from a Robert Frost poem and the credit card slip that Alex signed just before his death, the strange part: he signed it 11100100100111011001.

The marriage union of two rival Nietzschean Prides becomes the problem of the Andromeda. When Dylan ever seeking allies for the new Commonwealth agrees to ferry the bride to the wedding.

John is excited when he learns that his favorite college professor from Harvard is coming to town. But when John meets him, he's shocked to discover that the man doesn't remember him.

John loses his ability to channel Barry White while going up against Larry in a case involving a man who wants to clone his late wife; Nelle hooks Elaine into on-line romance; Ling's feelings for Jackson grow more intense.

Sean and Leigh are in the scarab off of Maui investigating a new man-made reef that is being put in to lure additional tourists. Neither of them is happy with this new development because it has caused a shift in the rip patterns. Nick, a surfer, is also concerned and, for some reason, isn't feeling quite well. His brother Joe is surfing and tombstones. Sean and Leigh quickly jump into action and bring Joe to the beach. He is unconscious and Nick is nearly hysterical. Sean and Leigh try to get him to wait for the ambulance, but he's too caught up in trying to save his brother. The ambulance arrives and Nick hops in to go to the hospital.

Tonight, the creator and producer of 60 Minutes, Don Hewitt.

Victoria Merrick is traumatised by the death of a patient.