Kristen and her brother Peter were raised by super villain Stefano DiMera at a very young age following the deaths of their parents; however, their mother Rachel was later revealed to be alive.

[9] The Hollywood Reporter later confirmed that Davidson had signed on to return to Days of Our Lives in the role of Kristen, and possibly some of her other characters.

Days of Our Lives co-executive producer Greg Meng added: "The writers have some great things cooking for Kristen and we can’t wait for the fans to see what this will mean for Salem.

"[21] In June 2014, Davidson announced she signed a two-year deal with The Young and the Restless, which would allow her to continue making appearances as Kristen.

[27][28] On November 17, 2014, Access Hollywood broke news Davidson was on-set of the soap, and reprised the role of Kristen for ten episodes, from April 14 to 30, 2015.

"[42] For fourteen years, Kristen had been residing in Europe, and returned to Salem as a businesswoman, wanting to show everyone "how she's changed and how she's grown" although "they haven't forgiven and forgotten" her wrongdoing.

[44] In an interview with Michael Fairman of On Air On Soaps, Davidson opened up about the pressure to re-capture the magic she had with the series 14 years ago.

"[45] Davidson felt that she wasn't sure whether or not Kristen would "have enough of an impact" upon her return, but praised the writers as "terrific" and hoped that audiences would be receptive of her.

Kristen is grateful until she realizes her savior is none other than John Black (Drake Hogestyn), Stefano (Joseph Mascolo)'s longtime rival.

Kristen later travels to the family estate in New Orleans, Maison Blanche, where she is taken captive by a very much alive Stefano forcing John to come to the rescue.

After numerous one-on-one encounters with John[61][62] and after saving his son Brady Black's (Eric Martsolf) life following a mugging,[63] their opinions of her change.

[69] John,[70] Marlena,[71] and Nicole Walker (Arianne Zucker)[72] come up with their own plans to break Kristen's hold on Brady to no avail.

Furious, Kristen sets her sights on destroying Marlena by having her way with her son Eric Brady (Greg Vaughan).

[103] In 2014, Daniel Jonas (Shawn Christian) is lured to a hotel room in St. Louis by Kristen who has her henchman knock him unconscious and tie him to a chair.

When he comes to, Kristen emerges and reveals to him that she has been keeping tabs on Brady, including his relationship with Theresa Donovan (Jen Lilley) and his father's coma.

Both Marlena and Eric agree to Kristen's terms, resulting in charges being dropped, and Daniel and Kayla receiving the full formula for the miracle drug.

When John begins to show some response to the drug, Kristen attempts to use the news as leverage to mend her relationship with Brady.

When John backs the theory that it was Brady who hit him with the poker, Kristen makes it her ultimate mission to prove Theresa's guilt.

An enraged Kristen heads to the park to calm down, only to overhear Theresa revealing to Anne that she's pregnant with Brady's baby.

Kristen makes one final phone call to Brady letting him know that as she leaves Salem, she's going to be carrying a part of him inside of her.

Melanie (Molly Burnett) begins investigating and eventually fits the clues together and reveals to Brady that Theresa was pregnant, he is the father, and that Kristen has stolen the baby.

Kristen is informed that Theresa is a suitable match for the baby and orders her henchman, Clint (Lucas Kerr) to bring her to her.

She is helped, once again, by Xander Kiriakis (Paul Telfer) in carrying out her plan, which involves trying to seduce Brady while also using Nicole's identity to manipulate Stefan into giving her a place in the family business.

Kristen talks her brother Tony, who is alive and still in love with his former wife Anna (Leann Hunley), into marrying her as Nicole in a scheme to take back DiMera Enterprises from Stefan (Brandon Barash) and Gabi Hernandez (Camila Banus).

With the assistance of Dr. Rolf and Xander, she decides to steal Sarah's embryo and implant it in herself, in an attempt to pass the baby off as her own with Brady.

Rolf informs Kristen that she is already pregnant after sleeping with Brady while impersonating Nicole, thus making the procedure on Sarah both unnecessary and impossible.

A year later, Kristen is shown living as a nun in the same convent as Lani Price (Sal Stowers), who she attempts to help cope with the pain she feels for calling off her wedding.

Kristen eventually agrees to serve time in prison for the stabbing, but when she suspects Chloe Lane (Nadia Bjorlin) of trying to seduce Brady, she escapes and threatens the former with a gun before Chad and Tony persuade her to surrender to authorities.

A desperate Kristen then ties up Sarah and crafts a mask of her face so she can drive a wedge between her and Xander (now her fiancé) by pretending to cheat on him with Rex.

Kristen is later tracked down by Billie Reed (Lisa Rinna) and her ISA partner, Kyle Graham (Peter Porte), at an outdoor café.