Moronica's. She's thrown on a thermal top and a pair of jeans and is kneeling on her living-room floor, poring over the rubbings as Doggett watches and paces around. Finally Scully arrives, just letting herself inside. Note to Moronica: lock your doors. Seriously. You have no idea who's going to break in and shoot you or a family member in the head. "Where'd you get those?" Scully asks, looking over Moronica's shoulder. "I got them," Doggett says. "He's one of ours, working deep undercover. Some kind of religious group, a wacked-out UFO cult." Apparently, this wacked-out UFO cult started out in North Dakota but migrated to Canada as they got nuttier. Not that Canada attracts nuts, or anything. The Wacked-Out Cult just went to Canada to escape the Feds. ["I'm sure the favourable exchange rate had some bearing on their relocation, too." -- Wing Chun] And once the cult crossed the border, the FBI lost contact with Buck. They suspect that Buck "went over to the dark side and got wacked-out himself." Scully's all, that's the big secret? That, and the fact that Buck isn't really dead, Doggett says. Scully furrows her brow and says that she wasn't questioned about any agent -- just about the rubbings. "There's got to be something more," she murmurs. Moronica nods. She thinks there is, she says, but that the FBI doesn't even know it. Because the rubbings Doggett borrowed from the Skinman? Don't match the ones Scully took in Africa. Doggett and Scully tilt their heads, questioningly. "It can only be that this wack UFO cult found a second spacecraft," Moronica hypothesizes.
The next day (or later that same day. I don't know. After sunrise. Whatever), Ma Scully takes William out in his stroller, almost getting both of them killed when she steps into the street without looking both ways first. She finally does manage to get the two of them back to the apartment without incident, but the instant she opens the door, Ma Scully gets grabbed by Buck. She squeals. Personally, after everything that's ever happened in that apartment, I don't know why anyone goes inside without first drawing his or her gun.
Scully's car pulls up outside. She sits in the driver's seat for a second and looks tired and guilty before getting out of the car and heading into the building. She's almost to her own front door before she notices that it's slightly ajar. Scully pushes the door in, calling for her mother. Ma Scully is then thrown out of the bedroom and against the wall of the hallway. Scully races inside, pulling her gun. "He wants to kill the baby!" Ma Scully hollers. Scully runs to William's room. Wait, William has a room? Two months ago he was sleeping in the living room with total strangers. Anyway, Scully races into her son's room, where Buck immediately grabs her and knocks the gun out of her hands. She promptly socks him in the jaw. They fight. Scully gets smashed against the wall, and Buck eventually throws her into the hallway and locks her out. Scully leaps off the carpet and starts banging on the door. "I'll kill you! I'll kill you if you touch my baby!" she screams. "Dana," Ma Scully offers hesitantly from behind her. Scully turns around to see her mother gingerly holding out a handgun. Scully grabs it, and shoots in William's door, then plugs Buck, who's in the midst of raising a pillow over William -- either to smother him, or to make him as comfy as possible, I don't know. Buck drops to the ground with a groan. Scully looks sorry she ever had a baby.