Detective Conan OVA 08: High School Girl Detective Sonoko Suzuki's Case Files
Sonoko is writing a script for a play. In her script, there's a murder case, and high-school detective Suzuki Sonoko is there to help solve it. Haibara finds flaws in the deduction section of the plot, and Ran decides to call Shinichi for help with the script.
[Source: Wikipedia; emended]