EastEnders teases explosive Jo Cotton secret with mystery phone call

JO Cotton returned to Albert Square just in time to drop a bombshell during Rocky's wedding to Kathy Beale.

But following last night's EastEnders episode, BBC One viewers are convinced she may be in touch with his secret offspring.

Vicki Michelle took on the role of Tom "Rocky" Cotton's scheming estranged wife earlier this year, wreaking havoc in Albert Square for both him and his new other half Kathy Beale.

Despite her interference, the couple managed to take their relationship to the next level.

However, recent scenes aired showed Jo hellbent on messing the lovebirds around as she told Rocky (Brian Conley) that, although they'd agreed to it, their divorce was never finalised.

This would mean that, by marrying Kathy, Rocky would be committing bigamy.

While he tried to keep his head held high during the ceremony, Kathy (Gillian Taylforth) found out the truth during the reception.

To make matters worse, Jo threatened to expose Rocky's bigamy unless she received the whopping sum of £50k from him.

Kathy decided to step in, taking out a loan and emptying her savings.

She even made plans to sell Beale's Plaice, the iconic local chippy which was once run by her son Ian, in an attempt to get Rocky out of trouble.

Ben Mitchell (Max Bowden) soon got involved, impersonating a police officer to scare Jo with the threat of blackmail charges.

The ordeal seemed to end when Rocky got their divorce papers and sent them off - but a cryptic phone call may hint that Jo has yet another trick up her sleeve.

Smug while in Kathy's café, Jo spoke to the a mystery caller during last night's trip to Albert Square saying: "Hello. I'm on my way back. I got what I wanted. Yeah. And there's plenty more for the taking."

Fans will have to wait and see what Rocky's bitter ex has planned but many of them have wondered who she could have been on the phone to.

Could Jo have a secret partner helping her or, more explosive yet, a secret child with Rocky he has no clue about?

Rocky's past prior to settling down in Walford is shrouded in mystery making the possibility of an unknown offspring highly likely.

Yet one fan theorised Jo could have been speaking with a VERY familiar face: "So who was Yvette sorry I mean Jo on the phone to!!?!??? My money is Dotty Cotton."

Dotty would have every reason to try and con Rocky as she was pushed out of Dot Cotton's will before leaving the Square in a strop.

To top it all off, Dotty was once believed to be Rocky's biological daughter until he revealed to her it couldn't be possible as he'd never slept with her mother Sandy.

Could Dotty be out for revenge?

Or did Jo give birth to Rocky's child behind his back?

EastEnders airs from Monday to Thursday at 7.30pm on BBC One.