Tess (Cassidy Freeman) reads Lionel Luthor's journal, recounting Clark's (Tom Welling) arrival on Earth and discovery by the Kents. It reveals that something else arrived on that ship: a pile of extraterrestrial goo that turned into a young Davis Bloome (Alex Ferris). The next day, Clark hands her a news story about a rash of recent murders--claiming that the same killer is behind them--only to see her sweep it under the rug.
Across town, grown-up Davis (Sam Witwer) is cooking dinner for Chloe (Allison Mack). Jimmy (Aaron Ashmore) is apparently out of the picture, and Davis seems to be making his move. As they talk, Davis cuts himself, but the wound heals instantly. They're interrupted by Clark, looking for information on the killer. Davis splits and goes into his Bill Bixby routine, then comes to just outside of Smallville, dismembering the corpse of his latest victim. After he finishes, he receives a call from Tess, who's standing right in front of his SUV. She presses a detonator and blows the vehicle to kingdom come.
Meanwhile, Chloe and Clark work the case. She agrees with his conclusion that a single killer is behind the slayings. Clark voices concern about her relationship with Davis, to which she coolly tells him to mind his own business. She spots a news report on the Internet about the SUV on fire outside of Smallville and they head out to the site, which also happens to be the same field where Clark's ship landed. Clark scans the field with his X-ray vision and finds a disturbingly large number of bodies buried in shallow graves.
Davis wakes up in Casa del Luthor, bandaged like Boris Karloff. Tess tells him she was trying to kill him, but confesses that it's difficult.. She then switches gears and informs him that she can help him, producing Luthor's book in the process. Flashback to the day of Clark's arrival on Earth. Young Davis hides while Jonathan and Martha Kent (John Schneider and Annette O'Toole) go over the wreckage of the ship. He's rousted by Lionel Luthor's thugs, who chase him into the corn before capturing and caging him. Lionel takes the boy to his mansion to perform tests on him, and young Lex (Connor Stanhope) finds him and bonds with him.
In the present, Davis heals in just a few hours' time, but the mansion continues to reawaken memories of his childhood. One in particular details his painful first exposure to kryptonite, suggesting a way he might kill himself before harming anyone else. Tess tells him that he is Judas to Clark's Jesus and that Clark cannot fulfill his destiny until Doomsday faces him. Davis goes all Bill Bixby again and knocks her across the room.
Clark and Chloe deduce that Tess abducted Davis, and Clark goes to visit her in the hospital where she is recovering. She spills the beans, explaining that while the Luthors believed they were Clark's great adversary, it was actually Doomsday. When Lionel realized he had the "wrong" boy, he turned Davis out on the street.
Davis approaches Chloe in her office and confesses that he loves her… which doesn't carry a whole lot of weight with her, until he asks her to help him die. Clark arrives a short time later and learns that they went to Luthor's Prometheus Lab, which has enough kryptonite to finish the job on Davis. Chloe can't bring herself to activate the machine, however, and Clark shows up in an attempt to stop them. Davis pleads with them to let him die, but Clark argues that there must be something in his life worth living for. Davis starts to Hulk out, causing Chloe to activate the machine. As he dies, Davis remembers the day the Luthors abandoned him: he had transformed into Doomsday and killed the flunkies assigned to the task.
Afterwards, Clark and Chloe engage in their usual postmortem. Chloe defends her actions, saying she'd rather kill Davis than risk the safety of the world. Clark returns to Smallville, where Tess confronts him about his powers. She claims that he'll never fulfill his destiny until he faces "his greatest challenge," and that she'll wait for him until he's ready to accept the truth. Chloe returns home to find Davis rummaging around in the basement. He tells her that the kryptonite treatment only made him stronger, and that he won't kill Clark if he's with her: he says that she calms his inner beast. She responds by locking the basement door, protecting them from unwanted intrusion.
Things are really starting to cook on this show. There was some question about how they could extend the Doomsday thing until the season finale, but the symmetry of laying everybody's cards on the table tonight feels just about right. The back story stays true to canon while acknowledging Smallville's unique take on the material, and adheres to the series philosophy of exploring the Superman story without resorting to epic brawls. (They can save that for a few more episodes.) Mack and Welling are in good form and Tess--manipulative ice queen of my dreams--proves once again how readily she can step into Luthor's shoes. Also, it was really great seeing Schneider and O'Toole again, if only in flashbacks.
Basically just some undue repetition--they had about 48 minutes worth of stuff here, rather than the full hour--and a few chintzy bits of make-up here and there. (Davis's red eyes aren't quite doing it for me.) Otherwise, a solid outing from the Metropolis crew, demonstrating that Smallville still has plenty of life left in it.
Chloe really does have the worst taste in boyfriends. When a surly, hostile, pill-popping Jimmy Olsen is looking like the better choice, it's time to declare celibacy. Perhaps she'll rethink her options when Davis pulls Clark's arms out of their sockets…