Departing EastEnders star Hetti Bywater has said she does not know how her exit storyline on the soap will finally be resolved.

Warning: spoiler alert!

Lucy will be murdered, with Bywater's final scenes set to air on BBC One and RTÉ One on Friday April 18.

The whodunit will run up to the show's 30th anniversary in February 2015.

Asked by Radio Times if she knew the identity of her character's killer, Bywater replied: "No. I thought I was 100 per cent sure and that I had it sussed out in my head.

"But after talking to everyone else on the cast I'm not sure anymore. Everyone's having little bets and coming up with their own theories."

As for keeping the storyline a secret, she said: "It was so difficult! I'd known for about five months before it came out.

"It felt like as soon as I knew suddenly everyone was coming up to me and asking me what my storylines were and where our characters would be in a couple of years' time. I had to make up things in my head!"

Bywater added: "It was hard. The hardest person to keep it from was Jacqueline [Jossa, who plays Lauren Branning] as we always talk about what we're going to do in the future."