As Rivals Season 2 reaches its midseason finale with Episode 5, viewers are left on the edge of their seats following a pivotal moment in the television franchise war. Rupert secured a win for Venturer with a "Golden Gauntlet" recording, only for the tapes to suspiciously disappear, later revealed to be destroyed by the series' primary antagonist, Tony Baddingham (David Tennant). With Part 1 concluding, actors David Tennant and Claire Rushbrook, who portray Tony and his wife Monica, delve into the intricate dynamics of their characters' relationships and the brewing drama set to unfold in the latter half of the season.

A central theme for Tony and Monica Baddingham revolves around their shared legacy, which both actors highlighted as a significant source of tension. Tony, characterized by his ruthless ambition, operates on the assumption that he can pursue his desires as long as they don't jeopardize his public image or embarrass Monica. Tennant explains this as a delicate balance, where Tony "does whatever he needs to do in whatever moment he finds himself, fairly ruthlessly, and not blowing up what he has." Monica, in contrast, is depicted as staunchly traditional, bound by societal expectations and her vows. Rushbrook emphasizes that Monica is "of the camp that you make your decision, and you stay loyal to that," deeply concerned with how her family and community perceive her actions. This stark difference in perspective creates a perpetual strain on their marriage, with Monica "holding on for dear life" to their established life.

For Monica, the season hints at a deeply personal awakening. Claire Rushbrook discussed the potential burgeoning romance between Monica and Dame Enid (Selina Griffiths), revealing Monica's internal struggle. Rushbrook suggests that Monica is "deeply blinkered to her own feelings" and finds it incredibly difficult to acknowledge anything unconventional or "dubious in any way." Her strong sense of propriety acts as a "prison," preventing her from giving "oxygen" to her true emotions, let alone sharing them. This internal conflict sets the stage for a significant character arc as Monica grapples with her desires against her ingrained traditional values.

Meanwhile, Tony embarks on an "unlikely new affair" with Maud O'Hara (Victoria Smurfit), a relationship Tennant describes as "slightly more opportunistic" than his past entanglements. Initially viewing Maud through the lens of her artistic talents and potential as a "pawn in his bigger game," Tony is unexpectedly drawn to her "anarchy" and "freewheeling nature." This discovery takes his breath away, leading him to tumble into the relationship deeper and faster than anticipated. Despite this intense connection, Tony's masterful ability to compartmentalize means he doesn't perceive this affair as a threat to his marriage with Monica, keeping the two aspects of his life distinctly separate.

The Baddinghams' marriage is poised for further turbulence as the series progresses. While Tony believes he understands the "rules" — that he can engage in outside activities as long as they remain private and don't harm their public standing — Monica increasingly challenges these parameters. Rushbrook indicates that "things become impossible to ignore," forcing Monica to "draw on some power" and directly confront Tony. Tennant confirms that their relationship "gets rocky as the series progresses," hinting at significant developments. Looking ahead to Episode 12, both actors offered cryptic insights into their characters' final states for the season, with Rushbrook stating Monica becomes "enlightened" and Tennant hinting that Tony will be "darkened," suggesting diverging paths and heightened drama as Rivals Season 2 continues.