Detective Pure and the Case of a Million

Mark Million lives next to a grumpy old man nicknamed the Ghost and is not thrilled about this neighborhood. The boy would be glad if the Ghost disappeared from Tunnel Street forever.
How surprised he was when the pesky neighbor actually... vanished... And only Mark noticed it. His intuition told him that the old man was in danger, but why take the risk for such an unpleasant neighbor?
Mark was already about to go to bed when he remembered that he had sworn an oath as a detective! To keep secrets, unravel the most tangled cases, help those in trouble, and be brave.
He doesn't even understand how he ends up at the creepy old man's mansion at night. But it is from this moment that Mark begins to unravel the tangle of secrets and intrigues related to his grumpy neighbor's family.