Simon and Tara pay her sister a visit at university and his friends decide to tag along. Will wants to take a look at the university. Jay decides to offer sex advice to Simon.
A monster called the Fright Hound starts attacking Crystal Cove and people believe Scooby-Doo is behind it. Could Scooby be the one attacking the city or is someone setting him up?
Mike dives into an amazing Michigan collection but Frank seems to have lost his picking mojo. The guys visit an incredible Wisconsin property that features a reconstituted vintage town. And, the only thing better than Ted’s quirky small town gas station is his one-of-a-kind home where everything is for sale. Frank senses engine trouble with the van while Mike ignores the signs and ends up on his hands and knees.
When a coded document attracts Castle's attention, Beckett must steer the case back to the violent felons who populated their victim's world; when Beckett's ex-partner arrives, Castle must watch the relationship become romantic.
The administration unveils a tough new strategy to force Sophia to reveal the detainees' plan; Vicky and Carter possess a crucial hostage.
Sterling Cooper Draper Price employees resort to scuttlebutt after an agency wide meeting is called.
Matthew Crawley and his mother Isobel arrive at Downton, and have difficulty settling in. Carson is mortified when confronted by his past. Violet attempts to promote a match between Matthew and Mary. Isobel is elected to serve on the hospital board.
Grampa gives each family member a portion of his savings; Lisa worries that Nelson's instant success with a new business venture might lure him away from continuing his education.
Lynette is angry when Renee starts spending a lot of time with Tom; Bree finds herself falling for Keith (Brian Austin Green); Susan feels guilty about her side job.
Stan offers a reward to the person who can stop Hayley and her old boyfriend from eloping.
Dexter tries to focus on the children and fight his dark urges; Debra ends up on Quinn's doorstep.
Charros owner Sebastian Cisneros agrees to pull out all the stops in promoting Kenny Powers’ return to organized baseball, but Kenny loses motivation after learning a secret about April from an old friend.
When a Fury with an unfaithful spouse tries to hire Bo to kill her husband's mistress, Bo instead takes the side of the unsuspecting human woman and puts her under protection.
Gently and Bacchus investigate the murder of a well-known left-wing academic.
Brian decides to confront Rush Limbaugh when he comes to Quahog for a book signing.
An unlikely witness to the woods massacre threatens to expose the perpetrators, sending both Eli and Van Alden rushing to the hospital. Margaret starts a new job at an upscale French dress shop at the Ritz, while Chalky's team pays a heavy price for taking over Mickey Doyle's bootleg operation.
The Walkers attend a swanky launch party for Luc’s underwear advertising campaign where 14-year-old Paige falls in with the wrong crowd; despite several visits from Justin, Holly still struggles to remember the things that were once most important to her; Kevin is saddled with a runaway juvenile delinquent; and just as Nora very publicly admits that she’s taken a part-time job as a florist, she’s approached by a radio show producer with a job offer.