Coronation Street Star Reveals How Costello Tightens His Grip on Lisa in Explosive Becky Plot

In a storyline that has quickly become one of Coronation Street’s most gripping recent arcs, actor Daon Broni—the man behind the chillingly composed DI Costello—

has pulled back the curtain on the psychological warfare unfolding in Weatherfield. Speaking exclusively to Inside Soap, Broni explained the dark layers behind Costello’s manipulation of Lisa Swain,

especially as Becky’s dramatic return threatens to bring every buried secret to the surface.

What began as a tragic disappearance has now spiraled into a web of deceit, coercion, and emotional entanglement that is reshaping alliances across Weatherfield.

A Conspiracy Built on a Lie

Viewers will remember the shocking storyline in which Becky staged her own death with Costello’s help. But the deeper truth was even more sinister than fans suspected. Costello didn’t simply bend the rules—he crossed a dangerous moral boundary by identifying the body of Tia Wardley, a homeless woman he himself had killed, as Becky’s. The false identification not only hid Becky from danger, but simultaneously safeguarded Costello’s own criminal secret.

And while the aftermath saw Becky fleeing to Spain under his watch, Lisa Swain—Becky’s wife—was left shattered, believing she had tragically lost the love of her life.

Costello’s dual loyalty created a twisted power dynamic: he protected Becky, controlled Lisa’s emotional narrative, and maintained his polished image within Weatherfield Police Station, even as the truth simmered just out of sight.

The Return That Changes Everything

Becky’s unexpected return has cracked Costello’s world wide open. Instead of the grateful fugitive he once assisted, Becky is now defiant and dangerously unpredictable. She refuses to leave Weatherfield again, determined to reclaim her life and confront the lies that destroyed it.

For Costello, that refusal is nothing short of a direct threat. His past crimes, his manipulation, and his carefully cultivated reputation are suddenly hanging by a thread. In recent episodes, Costello even went so far as to threaten Becky’s life—an ominous warning meant to push her back to Alicante before everything collapses.

But Daon Broni warns that Costello’s intentions are not as straightforward as they seem.

“It sounds very much like Costello would act on his threat,” he admitted. “And I do believe a part of him is capable of that. He has so much riding on this secret staying buried. But I want viewers to make their own judgment about who the real danger is—Costello or Becky…”

A Dangerous Dance of Secrets

While Becky fights to stay in Weatherfield, Lisa remains completely unaware of the chaos unfolding behind her back. And both Becky and Costello seem equally determined to keep it that way.

This delicate dynamic has created an emotional pressure cooker at Weatherfield Police Station, where Costello and Lisa often share the same workspace. Yet Lisa has no idea she is being subtly handled, guided, and misled by the man she considers a trusted colleague.

Daon Broni shed light on the disturbing psychological tension embedded in their scenes:

“It’s very much about managing the situation,” he explained. “Vicky Myers (Lisa) and I talked a lot about how their relationship feels almost like a form of coercive control. Costello manages the information Lisa receives. He controls how she perceives the situation. Their connection carries this strange, enigmatic energy.”

Rather than overt threats or visible manipulation, Costello’s tactics are quiet, strategic, and insidious. He is constantly watching, calculating what Lisa knows, what she suspects, and how to steer her thinking without her noticing his influence.

The Narcissist Behind the Badge

Broni further described Costello as a man deeply invested in maintaining his polished image—an obsession that mirrors the behavior of classic narcissists. Costello thrives on respectability. He hides behind the prestige of his police position, using authority and charm as shields against suspicion.

“There’s an element of massive manipulation,” Broni said. “Costello is probably a narcissist. He is fully aware of the position he holds in the community and how to maintain that aura of respectability.”

This façade makes Costello even more dangerous. He doesn’t simply want to avoid consequences—he believes he deserves admiration, control, and loyalty. His ability to maintain a calm, professional exterior while hiding violent secrets makes him one of the most complex villains Weatherfield has seen in years.

Becky vs. Costello: A Collision Course

As the storyline progresses, the tension between Becky and Costello is escalating rapidly. Becky has nothing left to lose. Costello has everything to lose. And Lisa—caught in the middle—remains painfully oblivious to the dark truths swirling around her.

Broni hinted that the question fans should be asking is not whether Costello will harm Becky, but whether Becky will expose him first. Their past alliance has turned into a dangerous rivalry, with each holding a crucial piece of the other’s fate.

With Lisa unknowingly tangled in Costello’s manipulative web, the emotional stakes continue to climb. If she uncovers the truth—not just about Becky’s “death,” but about Costello’s criminal involvement—the fallout will be explosive.

The Calm Before Weatherfield’s Next Big Storm

The Becky-Costello-Lisa storyline is building toward what feels like a major confrontation. Suspicion, loyalty, guilt, and revenge are converging in a storyline that promises to reshape multiple characters’ lives.

Will Costello’s façade crack under pressure?
Will Becky reveal his darkest secret to save herself?
Will Lisa finally see the truth about the man she trusts?

One thing is certain: in true Coronation Street fashion, the emotional storm brewing beneath the surface is about to break wide open.