Eric Nenninger

Penny tries to seduce an abstaining Leonard to ruin his “donation” for her ex-boyfriend, Zack, and his wife, Marissa (recurring guest star LINDSEY KRAFT). Meanwhile, Howard, Bernadette, Raj and Anu turn Raj’s canceled bachelor party into a “couple’s trip” aboard the “Vomit Comet.” Keith Carradine returns as Penny’s father, Wyatt.

When a massive earthquake rocks Los Angeles, the first responders rush to rescue victims from a crumbling high-rise hotel both under the rubble and high above the ground. Athena must deal with wreckage from a collapsed freeway overpass and Maddie is thrown into the fire as she faces her first crisis as a 911 dispatcher.

The first responders continue to deal with the fallout of a massive earthquake and its deadly aftershocks. Athena tries to keep the peace as Bobby and team continue to rescue victims from a collapsing high-rise hotel, both under the rubble and high above the ground. Maddie’s first day on the job involves helping a pregnant couple deliver their baby safely.

When a group of eighth-graders find the decomposed body of a woman wearing a medieval princess dress, the team is on the scene to investigate. With Booth incapacitated due to a back injury, Agent Payton Perotta steps in to help with the investigation. With insight from "squint" Colin Fisher, a self-professed geek and expert in the language of sci-fi, the team identifies the woman as a promotional model from ImagiCon, a convention for fans of comic books, video games and other sci-fi genre entertainment. Brennan and the team must navigate through the outlandish landscape of ImagiCon in order to track down the killer. They soon find the victim may have owned a highly valuable piece of sci-fi memorabilia that many would kill to possess.

While stuck at home with a broken leg, Castle believes he witnesses a murder in the apartment across the street.