Auzou Book for ghostbusters 5 the ghost train

Malo, his psychic friend Silène and the ghost Octave have the chance to spend the weekend at a fantasy theme park! Their stay would be perfect if Malo's sister Sofia, who is accompanying them with their parents, didn't keep poking her nose into their business... especially as, in the heart of the ghost train, they soon discover a specter from the First World War who needs their help! Their only clue to what's keeping him here on Earth: an old miner's lamp...