Night MazeNight Maze by Annie Dalton. Two tweens in an English manor solving a mystery of a family curse involving alchemy.
https://www.abebooks.com/9780749746025/Night-Maze-Dalton-Annie-0749746025/plp
He had never entered a maze. He imagined it like the drawings in comics. Trace the right path with your finger until you find the hidden treasure or the lost child.
‘Earth, Water, Fire, Air,’ sang the small blank voice in his head. ‘Met together in a garden fair. Put in a basket bound with skin. If you answer this riddle . . .’
He was too tired. Ever since the car had crossed over the river that ran quietly through the village of soft golden stone, he had been hearing disembodied voices.