Brimledge Boarding School is where brilliance is bred and perfection is demanded.
Its students wear their ranks like crowns; the Creatives in blue, the Geniuses in yellow, and the Psychs in red, each trained to lead, to innovate, to win and become world changers.
Dallas Green never chose to be there. Shipped off by a mother whose schemes couldn't survive her daughter's mind, she's thrust into a world where perfection and intelligence is power.
During the school's seventy-fifth-anniversary assembly, four boys,Trevor King, Robbie Ledger, Ricky Kim, and Jaden Brown, slip away from the crowd. Their rebellion turns chilling when they stumble upon the cold, blue body of a student on the forbidden floor of the library.
In the aftermath, fear corrodes the school's perfect surface. The line between brilliance and obsession disappears.
Because at Brimledge, genius isn't about being the best -
it's about control.
When SS3 student Chidinma stays back for extension - the tense, preparatory period before graduation - she expects the usual: long study nights, whispered gossip, and the mounting pressure of exams. What she doesn't expect is murder.
One by one, students start turning up dead. And the pattern is chilling - all the victims are connected to a dark secret from years ago, a secret buried deep in the walls of the school... and in Chidinma's past.
Now, as fear grips the hostel and paranoia spreads, Chidinma must confront the truth about what happened when she was in JS3 - because the killer hasn't forgotten, and the past is far from done with them.
Extension is a tense, Nigerian thriller that unearths teenage guilt, buried trauma, and the thin line between justice and revenge - all within the claustrophobic walls of a secondary school where no one is truly innocent.