The False Kidnapping and Hostage Case

A wealthy man's daughter is kidnapped. In order to save her he has to pay a five million dollar ransom, though he pays in couterfiet money the kidnapper escapes with the van because the cops were there. The van goes off a bridge and into the water. The police presume his daughter dead. But is she really dead? That's for Conan Edogawa to firgue out.