December 24th:
With a little bit of a push,
Chase attends Midnight Mass, sitting with the Doctor, Jack, and speaking to Jenny.
December 27th:
Chase reaches the breaking point when his hair begins to resemble a woman's. Wilson comes by and expresses mild worry at Chase's frustration, Ianto offers his hair-cutting services, Neil comes by to receive treatment and make snarky comments at the same time, Denny Crane thinks Chase should stop looking so womanly, the Doctor gives Chase a haircut not made with a bowl, Sirius comes by, and Maureen flirts on her way in while hinting at a threesome with him and Jack.
December 31st:
When the Island throws a party,
Chase sets up tequila shots for interested parties, which includes Meredith Grey, Neil McCormick, James Wilson, Gwen Cooper, and Cuddy. He also
checks in with House at the party. The liquor eventually
persuades Chase to sing Sheets of Egyptian Cotton.
While incredibly intoxicated, Chase finds his way into the Doctor's lap and arranges for sex.
In order to honour tradition,
Chase meets House for a midnight kiss and more.
January 1st:
A hungover Chase converses with Veronica about mysteries.
January 2nd:
In order to apologize for being such a flirt on New Year's,
Chase greets House enthusiastically and amorously and drags him away for sex.
January 3rd:
Chase works his clinic shift while going over the new patient information forms. Cuddy discusses them with him, Bridget talks to Chase about her pregnancy, Aziraphale comes for help with his back, and Gwen and Chase have a discussion that is still more acquaintance-like than friendly.
Chase is the doctor-on-call when Andrej and Faramir's bodies are found and he pronounces their deaths.
January 4th:
Chase greets the Doctor in a good mood, but it goes incredibly downhill when they fight over what Sirius did to Chase nearly a year ago. It ends with Chase giving the Doctor back his key and leaving.
Chase comes across House while still in shock and they discuss what happened.
January 5th:
Chase, having spent the night on the couch, wakes up in the morning worse for the wear. Jane comes by and asks if she can do anything for him, House comes by to try and get Chase to get some decent sleep, Sirius is in a bad way and tries to find Chase for comfort, but that doesn't go over well. Death also tries to take Chase back to her room to care for him. Finally, Jay comes by and figures out exactly what happened.
January 9th:
When the Doctor brings Jane to the Clinic,
he also stumbles upon Chase and they make up.
January 10th:
Chase comes by to properly appreciate House's new motorcyle.
January 15th:
Chase finds out that House is actually worried that Bridget Jones' baby is actually his.