Janelle Marra

Mitch and Cam's best gal pal, Sal, makes one of her notorious surprise drop-ins, but this time with big news - she's getting married... tomorrow! Cam and Mitch are the best men, but they can't help but question whether this party girl can really settle down, and they consider an intervention. Meanwhile, Gloria has trust issues with their new nanny, Claire has a rare bonding moment with Haley, and Phil helps Luke with a girl he likes.

The gang celebrates Halloween with a fancy dress party at Stuart's comic book shop, but Sheldon and Amy can't agree about which costumes to wear.

A murder investigation becomes personal for Lisbon when she learns that her underachieving younger brother, Jimmy, is being sought as a key witness.

JD tries to break-up with Danni, but she beats him to it when she realises that she will always be second place to Elliot in his heart. Dr Cox suddenly becomes a nice guy and Elliot changes back to her old self after Dr Kelso criticises her new look.

When the remains of a high-stakes gambler are found in an industrial shredder, Booth risks relapsing into his gambling addiction as he and Brennan delve into the world of underground poker. Meanwhile, Hodgins invents a new product related to the lab, and Brennan and Booth find out some exciting news.