Jaylen Barron

With the help of Special Agent Genny Shaw (guest star Tina Majorino), the Jeffersonian team identifies the remains of a discount shopper and “extreme couponer” who was dragged along the road by an 18-wheeler. Meanwhile, Brennan is adjusting to her first day back at work after giving birth, and Cam disapproves of her daughter’s romance with intern Finn Abernathy (guest star Luke Kleintank).

In the aftermath of the dam break, massive mudslides wreak havoc throughout Los Angeles. As Athena fights to save herself and an agoraphobic woman after her house collapses, Bobby, Hen and Eddie rush to save hikers endangered by the falling of the Hollywood sign. Meanwhile, Buck and Chimney must rescue a group of pregnant women trapped in a submerged house.

Kevin, Veronica and Svetlana start a topless maid service. At the shelter, meanwhile, Frank makes new friends to replace his old family - leading them to a for-sale house converted into the Gallagher Home for the Homeless. Plus, Debbie's new lifestyle comes to an abrupt end; Carl gets a syphilis scare; Ian struggles with a breakup; Lip struggles with humility at his new internship; and with Fiona on the run to clean up after her siblings, business at Patsy's hits the skids.

Debbie turns to Frank for support. He teaches her how to work the welfare system to her advantage while they plan Fiona's abortion intervention. Meanwhile, Kevin and Veronica (series stars Steve Howey and Shanola Hampton) visit Yanis (recurring guest star Will Sasso) in hospital and learn he's been paralyzed. V won't let Kev confess so he tries to make amends, but when Yanis arrives home and sees the two Lisas (recurring guest stars Jenica Bergere and Lee Stark), he tries to kill them with Kev's van.

It's wedding day and Debbie shows up at the church with Franny. Ian finally brings Caleb to meet the family. Frank shows up uninvited and high, and he reveals that Sean is still a practicing junkie. Concerned about preserving his relationship with his son — who is shocked by the news — Sean does everything he can to keep Will in his life.