Carmen LoPorto stepped into the role in preadolescence, portraying Jack regularly in a recurring capacity from September 3, 2007, through January 3, 2011, revising the character's birth year to 1997.

Todd (Roger Howarth) follows an unsuspecting Blair, eventually making her believe the baby boy died soon after his birth on October 10, 2001.

Blair eventually finds out after Jack is diagnosed with aplastic anemia, the same illness Starr had a few years prior when she discovered that Alex Olanov (Tonja Walker) also donated her bone marrow to save his life.

Aged to a preteen in 2007,[7] Jack becomes a regular recurring role who behaves as mischievously as his older sister Starr before him, learning her manipulative ways, as well as obnoxious and disrespectful behavior from his father.

Jack first appears as a self-absorbed teenager in February 2011[8] and begins bullying Shane Morasco (Austin Williams).

Jack makes it his mission to humiliate Shane, going as far as taunting him on fictional social networking website called "MyFace", believing his familial wealth and power would protect him.

Jack is soon confronted by Blair and Starr upon learning of the incident from Shane's mom, Gigi Morasco (Farah Fath), but he again feigns innocence of his actions.

After looking at the messages on Téa's laptop, Rex searches for Gigi and finds her unconscious in the basement of an abandoned former home of Jack's friend.

Téa takes Jack to see Todd (St. John) in jail, where she overhears him admit his culpability in Gigi's apparent death and tells him he could be tried as an adult.

As police officers John McBain (Michael Easton) and Brody Lovett (Mark Lawson), Todd bribes Jack's friend to take the fall, angering Blair.

August 1, 2011, at the apex of a story arc which brought Llanview elite to The Palace Hotel for the David Vickers Buchanan (Tuc Watkins) disastrous premiere of Vickerman: The Movie, a man claiming to be "the real Todd" (Howarth) pleads to Starr and Jack to believe him.

Later, when a DNA test concludes both men to be twins, and Jack's believed-to-be-dead paternal grandmother, Irene Manning (Barbara Rhoades) soon arrives in Llanview to tell the Lords she actually bore patriarch Victor Lord two twin sons, Todd (Howarth) and Victor, Jr. (St. John).

October 7, 2011, Jack takes brief ownership of The Sun and writes a scathing cover story on his father Todd, who he suspects murdered his uncle and adoptive father Victor, Jr. Concurrently, Shane confronts Jack at the cemetery near Victor, Jr.'s grave, accusing him of being Gigi's real murderer and shoots at him.

Angry at Todd reclaiming his life, Jack sets fire to The Sun offices, unaware Neela's brother and sister-in-law, Vimal (Nick Choksi) and Rama Patel (Shenaz Treasury) were both inside.

On the July 17 episode, Todd tells Carly Corinthos (Laura Wright) Jack is at ice hockey camp.