John Shea

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.

Carrie tries (unsuccessfully) to leave some feminine items behind at Big's place. Meanwhile, Miranda discovers that she has a 'lazy' ovary, Charlotte has questions about her new boyfriend, and Samantha plots a revenge scheme against an ex.

Morland offers to act as one of his son’s "Irregular" consultants so that he can lend Sherlock and Joan his considerable resources to help them solve a case.

When the remains of famous billionaire explorer Henry Charles’s body is found in Antarctica, the high profile case is brought to Brennan and Booth to determine if his death was a murder.  The Jeffersonian team confirms he was killed when he went missing ten years ago on an expedition, but the timeframe puts the Jeffersonian’s Dr. Clark Edison, who was with Charles for the expedition, on the short list of suspects.  Meanwhile, Cam’s sister comes into town to help with wedding plans and old family friction comes into the picture.

When Erin is stalked by a man who was recently released from prison after serving 12 years, she enlists Anthony and Danny to investigate her office's role in his sentencing. Also, Jamie works to save his badge when he is caught driving under the influence after he is unknowingly given drugs at a party, and Frank navigates multiple family issues as he deals with a troubling medical diagnosis for Henry, as well as Jamie's DUI.