A dirty cop from Danno's past comes to the island to exact revenge on Danno and his family for ruining his life, forcing the Five-0 to find a way to help their teammate.

Max and Caroline must prove their cleaning skills to Sophie in order to be hired as maids for her cleaning business.

Blair must make a difficult decision about her future, the consequences of which could hurt those she loves most. Serena takes the blame for an incident with Gossip Girl in order to protect someone she loves. Georgina smells the scent of scandal and decides to follow its trail.

Rosewood High’s "Truth-Up Day," is not just an opportunity for the students of the school to air their grievances and stop bullying, but also a chance for Aria, Emily, Hanna and Spencer to get answers to some burning questions. Spencer looks to find answers on what is going on between Jason and her father when Jason shows up as a chaperone; Aria continues to question Holden on what exactly he is up to during their "date nights," and Hanna tries to figure out the latest situation with Kate. But will the girls be ready for what they find out when shocking truths are revealed?

Zoe decides that it's too soon in her relationship with Judson (guest star Wes Brown) to go to the annual Sweetie Pie Dance so instead she makes plans to have a sleepover with Rose, whose parents are going out of town. George misplaces the save the dates for his upcoming wedding which causes major trouble in Lemon paradise. Lemon wants her father to finally move on from her mother leaving him, so she secretly gets him a date for the dance.

When a team member is injured while treating a patient, Foreman brings in his old mentor Dr. Cofield to get to the truth. However, it soon becomes clear that someone is at blame... even though the team insists that nobody is to blame.

Walden tries to loosen up Zoey by sharing a couple of Berta's special brownies.

Guy Hastings, an Alcatraz guard, reappears. Although a good man, Hastings is being asked to do bad things and will come face-to-face with an old acquaintance.

Joyce drives Vince crazy with jealousy when she agrees to have dinner with her ex-boyfriend.

During a routine stop for his morning coffee, Gibbs finds himself staring down the barrel of a gun, forcing him to question choices he has made in the past and present

Sally meets a kindred spirit; Josh runs with a new pack of wolves; Aidan is sucked back into his old life.

Lily and Marshall throw a housewarming party, where Ted nearly comes to blows with Marshall's boss, and Barney hits on a crazy divorcee.

The blind auditions continue.

Frank tries to claim Eddie's insurance benefits and pension, despite being a prime suspect in his death; Fiona attends a ritzy wedding with Richard and lies about her background; Lip is devastated by Karen's rejection; Carl rents Frank's room to a hooker.

Charlie's boyhood dream is realized and Hank's worst nightmare comes true when Samurai Apocalypse invites the boys on a ride-along with the Santa Monica Police Department and takes them on a joyride that goes sexually awry for Charlie; Richard hits the bottle at a crowded Venice restaurant but Hank and the boys arrive to save the day for Karen and Becca, and Tyler realizes he's seen Sam somewhere before.

Season 2 of the star search opens with the "blind auditions," in which celebrity coaches Christina Aguilera, Adam Levine, Cee Lo Green and Blake Shelton choose 12 vocalists for their respective teams.

The CSIs investigate when a role-playing game turns lethal, with one player falling victim to a bona fide killer and the other kidnapped and held for ransom.