Coronation Street fans were left baffled during the latest trip to Weatherfield as a 'newbie' appeared in David Platt's house.
Viewers tuned in to a rare Thursday, hour-long edition of the ITV soap and were greeted by a brand new face.
But it was actually David's adopted son Max Turner.
The character has got a new face as Paddy Bever takes over the role from Harry McDermott.
READ MORE: Corrie's Will Mellor grins while bloodied and bruised as he films drug lord Harvey's dramatic prison escape
Harry, from Bury, played Max in the soap from 2010.
Max, who suffers from ADHD, is expected to be central to an autumn storyline.
However, fans were floored as Paddy appeared in his first scenes as Max.
"So Max has gone from a 14 year old kid, to a 20 year old adult in a few months. What's David been putting in that lads orange juice? #Corrie," tweeted one.
Another said: "Hang on! When did Max turn into David Platt’s teenage Dad? #Corrie."
"#corrie peoples appearances change overnight on that street and everyone carries on like they haven’t noticed? #spooky," a third noted.
A fourth - and many others - asked: "Who's the lad in David's house? #corrie."
"Why has Max in #Corrie suddenly aged about 4 years?! He's about twice David's size!" another questioned.
A viewer added: "#corrieDavid’s talking to this stranger like he knows him."
Coronation Street said in a statement about Harry's departure: "We have all watched Harry grow up alongside Max Turner for the past 11 years and we want to thank him for everything he has brought to the character.
"It is always a difficult decision to recast a role and we look forward to following Harry's career as he continues with his acting studies and explores other opportunities. We wish him every success for the future."
The new Max returned with a bit of attitude for David as he begins to cause havoc at school and is involved in drama with teacher Daniel Osbourne.
After hearing about him being disruptive in class, David headed home and told off Max for his bad behaviour.
To get the latest email updates from the Manchester Evening News, click here.