William Abadie

When Blair’s father, Harold (recurring guest star John Shea, comes home for the holidays with an unexpected guest -- his boyfriend, Roman (guest star William Abadie - "Entourage," "The O.C.," "The Pink Panther") -- Blair finds it difficult to hide her disappointment and hatches a plan to get rid of Roman for good.

Season Four finale. At Cannes, the guys party it up and attend to the business of selling 'Medellin,' a not-so-easy task since the finished film has yet to be screened. Meanwhile, Drama enjoys the benefits of 'Viking Quest''s popularity overseas.

When Danny finds a disoriented man in a park covered in his girlfriend's blood, he finds it hard to believe that the man has no recollection of the night's events until they find a strong narcotic in his bloodstream.

Feeling the effects of a recent incident Barnes begins to go mad. Meanwhile Nygma is out of his depth in his relationship with Isabella (guest star Chelsea Spack) and Carmine Falcone (guest star John Doman) throws Lee and Mario (guest star James Carpinello) an engagement party.

When Summer tries to become the gossip-loving girl she once was, she realizes that Brown may have changed her forever. Fortunately, Seth continues to be supportive of the new Summer through all of her endeavors.