With just weeks to go until the 30th anniversary episode, wagers on the whodunit are going through the roof, with £10,000 worth of bets being placed by Eastenders punters in the last week alone.
And it's Abi Branning who finds herself as the lead culprit and chalked up as the 7/2 favourite with the bookies, however she's followed closely by Jane Beale who's given odds of 9/2.
Meanwhile, it's been revealed that actress Hetti Bywater will return as Lucy Beale for a special flashback episode next month.
It'll air in the leadup to the killer's reveal and retrace the events of last year that led to her death.
See the top suspects for who killed Lucy Beale here...
The current bookies' favourite to be revealed as Lucy Beale's killer at odds of 3/1 is youngster Abi Branning who was out walking at the time of the murder.