The luxury train Orient Express is stranded in snow. In the morning, passenger Samuel Ratchett is found murdered in his cabin, stabbed 12 times during the night.
The doors and windows were locked from the inside. A conductor's button was found in the victim's compartment and footprints were seen outside.
Your mission: Use SQL to investigate the evidence, uncover contradictions in the alibis and identify the truth behind Ratchett’s death.
Let's Investigate