[Ashley.]

"No one knows exactly what happened to Lucy on the night she died, except very few people - even the person responsible for her death.

"Ian will start to question how well he really knew his daughter, as secrets spill out after her death. But one Walford resident has a very dark secret about what really happened the night Lucy died - and viewers will be left guessing for the rest of the year... What killed Lucy Beale?"

The fact that all of this makes sense now that we know it was Bobby.