Something Borrowed ( TV story ) Something Borrowed was the ninth episode in the second series of " Torchwood " . It saw Gwen Cooper marry Rhys Williams and confirm her feelings for Captain Jack Harkness . This episode also marked the first appearance of Gwen ' s parents , Mary and Geraint Cooper , along with Rhys ' s own parents , Brenda and Barry Williams , who make their only appearance . The episode also makes references to Owen and Tosh ' s own relationship , and what could have been if he was alive . Synopsis . Gwen Cooper is about to get married to her fiancé Rhys . Only one problem : on her honeymoon night she is bitten by an alien and wakes on her wedding day heavily pregnant with a shape - shifter ' s baby . The alien mother is on the loose and searching for its offspring . The only way for the alien to get the egg is to rip open its carrier , Gwen . . . Plot . Gwen is late for her hen night , when she is sent after an alien with a carnivorous appetite . When wounded , its black blood tells the team that it ' s a shape - shifter . Following the trail of blood , she calls Jack in as backup . Suddenly the creature attacks and bites Gwen ' s arm as she struggles to fend it off . A gunshot rings out and the creature falls to the ground , dead . Jack helps Gwen up , taking notice of the bite wound and insists on having Owen examine it . Once her arm is bandaged , Gwen takes off for her hen night ; she explains that work kept her late . Her friends tease her with risqué comments about Rhys . Gwen wakes up in her flat the next day , feeling drowsy after her late night . She smiles as she spies her wedding dress . As she gets up she catches her reflection in the mirror ; she looks pregnant . . . " very " pregnant . Shocked , all Gwen can say is " Oh . . . " Gwen calls Jack and Owen for help . Gwen is dismissive of Owen ' s confirmation that she is pregnant and asks Jack for a second opinion . He agrees that she is obviously pregnant , prompting Gwen to ask incredulously " What with ? " Jack explains some aliens keep their bloodline going by passing eggs onto a host ; inside , they mature until ready to be born . He then makes a joke about how " Darwin would have a field day if he got to space " . Jack also explains that there is a procedure for this ; the public know it as immaculate conception . Jack tries to persuade Gwen to cancel the wedding , but she declines the idea . He then tells Gwen that her hormones are affecting her thinking , prompting an angry reply from Gwen as she wolfs down gherkins . Gwen asks Owen if her life is in immediate danger and Owen replies that if she and the alien fetus were biologically incompatible she would already be dead , so Gwen decides to wait until after the wedding to have the alien fetus removed . However , she does call Rhys to explain what has happened ; he heads straight home and begins ranting . Rhys also tries to postpone the wedding but Gwen insists and he gives in after Gwen tearfully tells him that all she wants to do today is marry him . The couple tells their families that they wanted to surprise them with the news of the pregnancy . However , Gwen realises this lie won ' t work ; their parents will be planning for their grandchild and telling them later that she lost the child would be devastating . Tosh arrives at the wedding venue , sent by Jack to guard Gwen . After being propositioned by Rhys ' best man , " Banana Boat " , Tosh delivers Gwen ' s new maternity wedding dress . They discuss the possibility of a relationship between Tosh and Owen . Tosh notes that the wedding vows would seem like a bad joke , since Owen is undead . Back at the hub , Owen ' s autopsy determines the creature is a Nostrovite , a carnivorous shape shifter who mates for life and hunts in pairs . After fertilisation , the female transfers eggs to the male , who transfers them to a host to incubate until the offspring is mature . The female then kills the host , releasing its newborn in a " midwife from hell " fashion . The mate of the dead Nostrovite will be hunting Gwen . The Nostrovite infiltrates the wedding and murders the DJ , eating most of him . Her presence is detected by Tosh and Banana Boat ; Banana ' s blunder costs Tosh the chance to shoot the creature . They ' re knocked out and trapped on a bed in a black , web - like construct . Gwen and Rhys are at the altar when Jack demands the wedding be stopped . Owen and Ianto rescue Tosh and Banana Boat . They also find Mervyn the DJ ' s mangled corpse . A bridesmaid , Megan , enters the room . Seeing Mervin ' s body , she flees . Jack orders Ianto to go after her , but he fails to stop her before she screams murder to the entire wedding party . Ianto jams the phone lines via the Torchwood SUV to prevent the guests summoning the police and Jack reveals his Torchwood affiliation , much to the surprise of Gwen ' s father . Before he can press the issue , Tosh notices the alien mother and alerts Jack . The Nostrovite reveals its true appearance and attempts to attack them , but flees out the window under a hail of bullets . Tosh and Jack give chase but lose its trail , though Tosh surmises that it won ' t have gone far without its child Jack checks in with Owen about Gwen ' s condition , and Owen tells him Rhys ' mother Brenda is with the couple . Tosh notices Brenda with Gwen ' s mother in the garden , however , and they come to the conclusion that the alien has assumed Brenda ' s form to get close to Gwen . Tosh and Jack reach the couple ' s room , where Jack calls the Brenda alien an " ugly bitch " and reveals to Rhys and Gwen that the Nostrovite has disguised itself as Rhys ' mum . Gwen asks if the alien can copy smells as well as appearance . On being told no , Gwen concludes that this is the real Brenda because she is wearing her familiar , awful perfume . Rhys punches Jack for calling his mum an ugly bitch . The team plus Rhys reach the garden to find the Nostrovite still with Gwen ' s mother Mary . They confront the Nostrovite and she takes Mary hostage , demanding her child in exchange . Gwen calmly walks towards them but as she gets close the Nostrovite releases Mary and charges . Gwen shoots it several times in the stomach with a gun hidden in her bouquet , but it manages to flee . Owen has brought the singularity scalpel to destroy the egg . He sends Gwen to her room , but takes Rhys aside while he tells Rhys about the scalpel and teaches him how to use it ; Owen ' s knackered hand means Rhys would have better accuracy with the scalpel . Jack enters Gwen ' s room whilst Owen and Rhys are talking . He and Gwen share an emotional conversation about their feelings for each other . As they are about to kiss , Jack transforms into the Nostrovite . Owen enters and shoots the Nostrovite while Gwen exits with Rhys . After realising Owen is dead the Nostrovite breaks off its attack , choosing to pursue Gwen . The rest of the team meet up with Owen , who explains that he and Gwen emptied whole clips of bullets into the alien , but " some mother instinct or something " is making it unstoppable . Since ordinary firearms are ineffective , Jack decides that they need a bigger gun and begins to assemble one taken from the SUV ' s boot . Rhys and Gwen reach the stable and Rhys explains Owen ' s plan to remove the egg with the singularoty scalpel ; Gwen is not enthused but they are out of choices . Rhys removes the egg and just as it is vapourised the Nostrovite breaks in , impersonating Rhys ' mother again . She moves toward Rhys , who picks up a nearby chainsaw . Furious at all that the creature has done to ruin his wedding day and threaten his bride and family , he lunges at the Nostrovite with the chainsaw . At that moment the chainsaw stops working , causing Rhys to swear profusely . The Nostrovite mockingly calls him a bad boy ( " You know what bad boys get ? ! " ) and raises its claws to attack him . Before it can do so , it is blown to bits from behind , spattering Rhys with its gory remains and black blood , and revealing Jack at the door with a large laser gun . Jack grins " How ' s " that " for a shape - shift ? " and helps Gwen up . Putting her hand in Rhys ' , Jack proclaims , " The hero always gets the girl " . Rhys and Gwen ' s ceremony resumes and the somewhat disheveled couple are wed . At the reception , Jack dances with Gwen and wishes her well . Rhys and Gwen notice everyone falling asleep . Jack has retcon ned the wedding party and guests so they will not remember the bizarre events . Jack offers the couple pills as well , but Gwen declines . She insists there will " be no secrets in this marriage " . They exit , thanking the team for everything . Jack and the others clean up . Ianto notes the irony of fighting aliens by day and being " Wedding Fairies " by night . Later , Jack enters the Hub alone , blowing some confetti in the air . He retrieves a battered tin box holding old pictures . He looks through them , reminiscing , but picks one up and stops . This picture shows Jack and his bride at their wedding . Story notes . Filming locations . " to be added " Production errors . " to be added "