Grover goes undercover at his favorite store selling antique aloha shirts.

When it's evident that art is at the heart of a murder case, Tani calls in former forger Gerald Hirsch.

Danny and MacGarrett sub as bodyguards for Danny's high maintenance ex-mother-in-law on Hawaii Five-0. "Ai no i ka 'ape he mane'o no ko ka nuku (He who eats 'ape is bound to have his mouth itch)" is the 18th episode of the show's ninth season.

Danny and MacGarrett sub as bodyguards for Danny's high maintenance ex-mother-in-law on Hawaii Five-0. "Ai no i ka 'ape he mane'o no ko ka nuku (He who eats 'ape is bound to have his mouth itch)" is the 18th episode of the show's ninth season.

McGarrett and Danny serve as security for romance novelist Amanda Savage, Danny's ex-mother-in-law.

Tani and Junior find used vials of steroids in Brad's apartment.

Tani responds well when she gets called upon to teach an aerobics class while undercover.

Grover and Junior sweat a suspect involved with lining up blood from healthy young men for a shady deal.

Adam searches the house of drug dealer Moses Pocheho trying to locate a deadly batch of steroids.

Willie Garson as Gerard Hirsch on Hawaii Five-0. "Pupuhi ka he'e o kai uli (The Octopus of the Deep Spews its Ink)" is the 19th episode of the show's ninth season.

Junior is torn between the team and helping a former girlfriend on Hawaii Five-0. "E'ao Lu'au A Kualima (Offer Young Taro Leaves To)" is the 17th episode of the show's ninth season.

Adam befriends a homeless man estranged from his family on Hawaii Five-0. "Hapai Ke Kuko, Hanau Ka Hewa (When Covetousness is Conceived, Sin is Born)" is the 16th episode of the show's ninth season.