Scorpius, Albus, and Delphi go to the Triwizard Maze in Harry Potter and the Cursed Child. Mad Eye Moody (Barty Crouch Junior) was patrolling outside the maze. His magical eye could see through the hedges.
Didn't he notice two boys and a young woman there? He might have done so because Cedric interacts with them and we know Moody had his eye on Cedric.