The actress will feature on screen as a prison governor later this month, keeping a close eye on glamour girl Mitzeee Minniver (Rachel Shenton) as she remains behind bars for a crime she did not commit.
Pictured: Claire King in Hollyoaks.
Mitzeee was recently framed for a shocking attack as scheming Mercedes McQueen stabbed herself to land her love rival in deep trouble.
King, who played Kim Tate in Emmerdale and Karen Betts in Bad Girls, will be appearing in episodes which see Mercedes's mother Myra (Nicole Barber Lane) transferred to the same prison as Mitzeee. A number of heated clashes then take place between the pair.
Pictured: Myra confronts Mitzeee behind bars.
Speaking of the guest part, King commented: "It's great to go back to my soap roots and work with the talented team at Hollyoaks. Rachel and Nicole were fantastic to work with and I really enjoyed filming the dramatic prison scenes."
King's first scenes will air in the week commencing Monday, August 6.
Hollyoaks airs weeknights at 6.30pm on Channel 4, with first look screenings at 7pm on E4.