EastEnders’ Billy Mitchell (Perry Fenwick) will receive some devastating news next week when the truth about his mother is revealed.

The Walford legend, who grew up in care, was recently stunned to discover he has a secret second family, after his dad Stevie Mitchell (Alan Ford) came back into his life after decades of absence.

Billy’s brother Teddy (Roland Manookian) and nephews Harry (Elijah Holloway) and Barney (Lewis Bridgeman) arrived in Albert Square last week, but viewers know Stevie is still lying to Billy

about his relationship with Teddy’s mum.

Forthcoming scenes will see Billy throw a surprise birthday party in The Vic for his dad, and as he talks to son Will (Freddie Phillips) about his long-lost mum having the same birthday as Stevie, Billy admits he has no idea where she is living.

Meanwhile, over at the café, Phil Mitchell’s (Steve McFadden) suspicions are spiked when he witnesses a meeting between Teddy and Stevie and overhears Teddy warning his dad to stop lying.

Phil soon enlists the help of his trusted lawyer Ritchie Scott (Sian Webber) to do some digging.

Back at The Vic, Stevie is overjoyed to see the effort Billy has gone to in arranging his party, and Billy gives a speech, in which he wishes his mum well, wherever she is.

But the party atmosphere is ruined when Phil rocks up armed with evidence Ritchie has uncovered about Stevie, taking him aside to issue him an ultimatum.

Ushering everyone back to No. 18, Stevie then confesses to Billy that his mum is dead.

Billy is left devastated by the news. Will Stevie elaborate on what exactly happened? And if so, will this revelation blow the Mitchells apart?