Hollyoaks star Jennifer Metcalfe has issued her concerns for her on-screen son Bobby Costello (Jayden Fox).Mercedes McQueen was left gobsmacked in recent scenes of the Channel 4 soap after little Bobby killed his serial killer grandfather Silas Blissett (Jeff Rowle).The protective mum was determined to protect her boy and they both left the village during Thursday's (September 39) first-look episode on E4.READ MORE: Sarah Jayne Dunn's sexiest ever snaps – bum flash, topless display and bondage outfitEvil Silas returned in recent scenes to get his hands on grandson Bobby and decided to try to kill the McQueens by using an electrified life-size chessboard.However, his plan seriously backfired and Bobby later returned to the scene of the crime to finish Silas off, pushing him onto the deadly chessboard.Soap star Jennifer has revealed that she's doesn't want Bobby to become the next villain.She said: "Bobby could turn into his Grandad at some point, he’s a brilliant little actor and one of my favourite people to work with."He’s so talented and I think over the last two years he’s just got better and better.