Victoria Sugden could be in huge danger after rumbling one of John's biggest secrets during this Tuesday's trip to Emmerdale. A new theory now suggests he could be a killer.

Emmerdale's John Sugden (Oliver Farnworth) finally opened up about who Aidan Moore is - but fans of the ITV soap are convinced he is lying and is not a real Sugden

Emmerdale newbie John Sugden finally revealed who Aidan Moore is to half-sister Victoria - but viewers are convinced that he is is lying

Oliver Farnworth, the soap's fresh face playing John, made quite the entrance earlier this year as the previously unknown son of Jack Sugden, portrayed by Clive Hornby. His impact on the villagers was immediate and formidable.

John Sugden has shared the heartbreaking truth about his "Aidan Moore" secret in Emmerdale. The newcomer's past has been shrouded in mystery ever since viewers saw that he was keeping a set of army dog tags with the name "Aidan Moore" on them.

Emmerdale fans are convinced that John Sugden isn't who he says he is after Victoria discovered some dog tags in his van - but what is the real identity of the mystery man?

Emmerdale's John Sugden lost his cool when Victoria Sugden confronted him about his true identity - and fans think they've worked out who he really is

Emmerdale's Arthur Thomas sparks a showdown at The Woolpack next week after involving John Sugden in a lie about his sex life. Arthur is left mortified as his attempts to impress his friend April Windsor backfire badly.

ITV viewers were left scratching their heads after this Monday's Emmerdale instalment as Victoria Sugden made a big Aidan Moore discovery. Fans now believe John is 'not a Sugden.'