Blood & Oil: Hap's Briggs Oil Party Gets Some Unwelcome Guests (VIDEO)

Marisa Roffman
Fred Hayes/ABC

BLOOD & OIL – “Rats, Bugs and Moles” – Briggs Oil is celebrating its 30th Anniversary, and the party must go on, even in the wake of the intensified federal investigation into Hap’s business dealings. Suspecting there’s an informant in his ranks, Hap clamps down on security and nearly exposes his son, Wick, as the source of the leak. This leads Wick to recruit an unlikely accomplice in his desire to bring down his father. Meanwhile, Annie sets up shop in Rock Springs with her new partner, Billy, who finds himself increasingly preoccupied as his lies begin to catch up to him in the form of Gary Laframboise, who threatens to expose the truth about Billy, on “Blood & Oil,” airing SUNDAY, NOVEMBER 29 (9:00-10:00 p.m., ET), on the ABC Television Network. (ABC/Fred Hayes)

Blood & Oil celebrates Briggs Oil company with an anniversary party in this Sunday's new episode. Except Hap (Don Johnson) and Carla's (Amber Valletta) shindig has a few crashers: Billy (Chace Crawford) and Hap's ex-wife, Annie (Lolita Davidovich).

But when Hap says he "must have missed [their] names on the guest list," Annie is quick to point out why she's there—and to take a chance to throw a barb at his new wife.

"How could I forget a Briggs Oil anniversary party?" Annie points out. "I started this company, back when Hap married for love."

Ouch.

Watch an exclusive clip from the episode, "Rats, Bugs and Moles," as Annie and Billy make their presence at the party known.

Blood & Oil airs Sundays at 9/8c on ABC.