By Olivia Wheeler EastEnders is lining up explosive scenes next week as George Knight’s son Junior Knight finally debuts. It was recently revealed that the hit BBC One soap had cast actor Micah Balfour for the role of Junior and that Junior was heading to Walford. However, it was teased that Junior is hiding something while bosses are remaining tight-lipped over what brings him to Walford, and why he and George are estranged. In upcoming scenes this week, George suffers a dizzy spell after his recent fights, and he almost collapses. He’s urged to go to the hospital by Phil Mitchell and ex Cind…