The Investigation

Hint: Where is the scene of the crime?

Hint: What should I look for at the scene of the death?

Hint: How was Mr. Robner killed?

Hint: How did the killer enter?

Hint: When was there ample time for the killing?

Nested hint: How can I prove a motive?
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Hint: Who killed Mr. Robner?

Nested hint: What objects do I need for a conviction?
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Hint: How can I get different endings?