BBC Share By Kaggie Hyland Sep 21 2017 By Kaggie Hyland Sep 21 2017 EastEnders viewers convinced James Willmott-Brown is back to terrorise Kathy They think he is also Fi's father EastEnders Share By Kaggie Hyland Sep 21 2017 By Kaggie Hyland Sep 21 2017 EastEnders might just have pulled off the most sensational storyline of the year – if viewers’ frenzied speculation about Thursday night’s instalment proves to be true. At the end of the episode we saw a mystery figure leave some flowers on the Square, ostensibly as a tribute to Steven – after spying on Ian and Kathy Beale. The bouquet of lilies was accompanied by a note that read: “Kathy, Thinking of you, Always. An old friend xx” In isolation, it’s not that creepy a gesture. But earlier, we watched as Fi – as we so far know her as – confirmed that Josh is her brother. That was after he called her ‘Sophie’… Article continues below Read all the latest spoilers They had a cryptic conversation about a plan in place tomorrow, which involves their father. Josh – if that is his real name – wanted to pull out of what we can only assume is a nefarious family ‘happening’ to support Lauren at Steven’s funeral. But ‘Fi’ was insistent, because their father was looking forward, adding: “All is in hand.” She, you may recall, told Mick her dad was dead – as well as her mum. Sleuth soap fans were quick to come up with some pretty compelling conspiracy theories – namely that Fi/Sophie is the daughter of James Willmott-Brown. In 1988 the posh some-time owner of the Queen Vic raped Kathy Beale – and he had a daughter named Sophie. And a son named Luke… Read more: Explosive scenes at Steven’s funeral He was eventually sent down for the attack. Many viewers are now convinced that he is back – and behind the plan to bring the residents of Albert Square to their knees. Read more: Lauren makes huge mistake as she grieves for Steven Far fetched it may be, but he is certainly a credible candidate for someone wanting to carry out such an act of vengeance. We’re beside ourselves with excitement for how this up-to-now confusing plot will play out – and how Max Branning has come to be embroiled in it! Good to Know Share By Kaggie Hyland Sep 21 2017 By Kaggie Hyland Sep 21 2017