Update to Murderer Identified in Poem

In an earlier post, I linked to the story about an anonymous poet who allegedly knows the identity of a local murderer and revealed as much in a poem he plastered on telephone poles around town. Police haven't been able to find or convince the poet to come forward with the murderer's identity, presumably because he's afraid of retribution. Read the latest update here.

Here's a writing exercise: Write a poem in which the speaker of your poem witnessed a murder but is afraid to reveal the identity of the killer.

--AB