Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.
When a savage killer runs rampant in Miami, Horatio must intervene to stop a member of the police force from getting too close to the case.
Charlie finds himself in an uncomfortable position when Jake takes off with the daughter of a former NFL player. Charlie's Mercedes proves a boon to Alan's love life.
Derek and Andy were drawn to their home by the old-world charm, but now that they have two kids, and are looking to have more, their house doesn't fit their family. That's where Designer Hilary and Realtor David come in. Hilary and her team will reconfigure the space so it will fit the family now and in the future. David will search for home with both the character and charm they love, and the additional space they need. After all the work is finished, Derek and Andy will have a decision to make. Will they love their house again? Or will they list it?
A nasty rumor threatens to end Lauren and Audrina's friendship and Heidi realizes Spencer's been withholding information from her.
Lebano throws a wild party as the gang's confidence continues to grow, and Dandy decides to expand further into Terrible's territory - but his plan has harrowing consequences for two of his cohorts. Meanwhile, Freddo is drawn to his brother's girlfriend Roberta.
With the Earth devastated under the control of the Trickster, Sarah Jane and Luke go back to 1951 and change things back to how they were- which means that Sarah Jane's parents must die. Will she make that sacrifice?
When Oscar and Emma invite Lacey to their hot tub party, she is excited to finally be included until she finds out that she's the only person to accept; Davis introduces a new mascot to promote DRPD; Hank suddenly becomes homeless, leaving Brent to wonder where he's spending his evenings.
Unusual forensic experts helped solve the 2004 murder of Charlene Hummert: forensic linguists, soil analysts, photometrics, and computer recovery. Even without being allowed to know the man had confessed to the murder, the jury convicted him on the evidence.
Samantha invites Owen to dinner to meet her parents; Dena worries that Chase isn't spending enough time with her; Todd asks Samantha to stay at her parents' house while his mother is in town.
Harry is imprisoned and accused by MI5 of being the Russian mole. Lucas disappears to Moscow in a bid to gather intelligence and get to the bottom of Harry's arrest, whilst the rest of the team tries to prove his innocence on the Grid. But with so much evidence against him and a traitor among the team, things aren't looking good for Harry.
The eclipse plays havoc with the heroes' powers. Arthur orders Elle and Sylar to bring in Claire. Hiro, Ando, and Matt follow Daphne to her hometown to learn what hold Arthur has on her, and Peter and Nathan travel to the Haitian's hometown to recruit him for the war with Pinehearst.
In order to date his loathsome girlfriend without gagging, Drinky Crow tears out his eyes and replaces them with beer goggles.
When Miley asks for a raise on her allowance, Robby decides to teach her about fiscal responsibility.
As we descend beneath our modern day cities, we are met with ancient and hidden secrets. Journey with us back through history and rediscover cities of the underworld.
Hank turns down an offer of sex which is unthinkable (for him). Karen gives in to Ashby's asking and agrees to date him. Charlie and Daisy have a bonding moment over the film Dirty Dancing, while Marcy is still in rehab.
Jonas and the team must travel through enemy territory to bring a young bride to her groom, preserving a truce between two warring Afghanistan tribes; Kim and Bob try to expose a man who is linked to terrorists.
Miguel and Dexter's friendship is impacted when Rita confronts Miguel about his alleged infidelity. Believing Skinner has abducted Anton, Debra pulls out all the stops to find him
Despite a not-so-triumphant return, the guys party it up in NYC. After getting a tip from Vince's mom, E stalks Gus Van Sant to convince him to cast Vince in a role. Meanwhile, Vince reconnects with his high school sweetheart and Drama considers an investment opportunity.