Coronation Street Fans Call for Flashback Episode as DI Costello’s Dark Secrets Surface
Coronation Street fans are demanding answers after the ongoing Becky Swain storyline took a sinister turn — and actor Daon Broni, who plays Detective Inspector Costello, dropped a chilling hint about his character’s true nature.
Costello’s Threat and Becky’s Defiance
Costello, head of CID in Weatherfield Police, has been a shadowy presence for months, claiming to “protect” Lisa Swain while secretly pulling strings behind the scenes. His connection to Becky’s supposed death — and her shock return from witness protection — is now under intense scrutiny.
In recent scenes, Becky (Grace Hogg-Robinson) confronted Costello, only to be met with a deadly warning. Costello coldly told her that if she didn’t leave Weatherfield, he would have her killed — just as he did Tia Wardley.
But Becky, ever defiant, refused to back down. Declaring she wouldn’t leave without Lisa and their daughter Betsy, she stunned Costello by standing her ground — and even agreeing to a supposed “family holiday” to Spain, where danger now seems inevitable.
Fans Demand Flashback to Reveal What Really Happened
The chilling exchange has sparked major fan theories online. Many believe the key to Costello’s motives — and Becky’s survival — lies in a flashback episode that revisits her “death” years earlier.
On X (formerly Twitter), viewers rallied for a full backstory reveal:
@swarlanations: “This Becky/Costello storyline needs a flashback episode to explain everything.”
@corriecorefour: “Absolutely agree — it would make everything click into place.”
@Sjl170: “Omg yes! Because I’m getting so confused right now!”
Theories suggest that Costello’s threats may be linked to a corrupt police cover-up, possibly involving a botched operation or personal betrayal.
Daon Broni on Playing His ‘Hidden Villain’
Speaking to Radio Times, actor Daon Broni admitted that Costello’s menacing turn has been a thrill to play:
“He’s said that he would do it — and to think about it, he’s got a family, a daughter and a wife. On one hand, yes, he’d kill Becky to protect them. On the other, maybe the threat alone is enough.”
Broni then teased his enjoyment of the darker material:
“I don’t think I’ve ever played a nasty character in the way Costello’s developed, but I always knew my hidden villain was there! It’s been great exploring that side — he’s not an obvious villain, it’s all threats and mental games.”
What’s Next for Lisa, Becky, and Carla?
The triangle between Lisa, her fiancée Carla Connor, and ex-wife Becky is heading toward chaos. Carla’s trust is already hanging by a thread, and Costello’s growing involvement could push Lisa to a breaking point.
With Coronation Street fans begging for answers — and ITV teasing a “shocking twist” in the lead-up to Christmas — the truth about Becky’s fake death and Costello’s past crimes may finally come to light.