EastEnders' mystery note: Lauren knows who did it... Do you?

Thursday's EastEnders featured a major revelation when Lauren Branning came upon a note in the late Emma Summerhaye's case file on Lucy Beale's murder.

Lauren discovered the ripped note in Max's flat, a forgotten trace of the file after Max tried to destroy it in the wake of Emma's death.

The note suggests a person interviewed in Lucy's murder investigation cannot account for 10 hours on the night of the evil deed.

Emma's conclusion is: "Doesn't Add Up."

But who is that person and whose phone number is it?

Lauren Branning knows. Do you?

The murderer will be revealed in EastEnders' 30th anniversary week programming. Read the full schedule here.

Patrick McLennan is a London-based journalist and documentary maker who has worked as a writer, sub-editor, digital editor and TV producer in the UK and New Zealand. His CV includes spells as a news producer at the BBC and TVNZ, as well as web editor for Time Inc UK. He has produced TV news and entertainment features on personalities as diverse as Nick Cave, Tom Hardy, Clive James, Jodie Marsh and Kevin Bacon and he co-produced and directed The Ponds, which has screened in UK cinemas, BBC Four and is currently available on Netflix.

An entertainment writer with a diverse taste in TV and film, he lists Seinfeld, The Sopranos, The Chase, The Thick of It and Detectorists among his favourite shows, but steers well clear of most sci-fi.