Two writers are found dead in their homes, both with a pen in hand. One pen is filled with blue ink, and the other with red. What do you deduce?

Category: Mystery · Difficulty: hard

Hint: Consider the significance of the ink colors.

Answer

They were collaborating on a secret project.

Explanation

The different ink colors suggest they were working on something together, possibly leading to their deaths.

This is a hard mystery riddle — a tricky one that takes a little thought. The answer is They were collaborating on a secret project..

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