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A clown came to Marlene Warren's door and shot her in the face 27 years ago.
The suspect's husband says she's innocent.
Deborah Offord and Barbara Castricone say detectives asked them about a customer who bought a clown costume.
The Blevins say they couldn't believe Sheila Keen-Warren, who they knew as Debbie, was charged with Marlene Warren's murder. She has pleaded not guilty.