Ted and Barney go out to the clubs with Robin, as Lily and Marshall go to an adult wine and cheese party.
The son of devout Jehovah's Witnesses is accused of killing his teacher after being caught fleeing the scene of her murder; the Democratic National Committee hires the team to investigate a second case.
With changes at home and work, Meredith struggles to find a sense of normalcy; Callie and Arizona reach a decision about surrogacy; Amelia overhears a secret; Bailey realizes she will have to battle Alex for the board seat.
Caroline promises to put Earl's tax return in the mail but gets sidetracked when she learns Max has never filed.
Sarah, Tommy and Kevin find William's most shocking secret when they set out in search of his lost treasure; Justin makes a startling revelation about his enlistment when he returns from the hospital.